Mopar Performance - HEMI Engines


CAST IRON HEMI BLOCKS We've made the best! Mopar Performance Hemi engine blocks have undergone revised, updated tooling. They are machined to closer tolerances than ever, and feature increased material in the thrust area. Just check out the features: 100% CNC Machined for accuracy and quality Brand-new castings made from high nickel alloy cast iron Thicker deck surface for improved rigidity and gasket sealing Ductile iron main caps, which are cross-bolted on the 3 center caps on all the blocks Stock 10.72"deck height allows for installtion of all standard components Machined to accept all standard production pieces, such as heads, manifolds, water pumps, tappets, cams and distributors *Machined and cast in various configurations to meet your specific requirements	Cast Iron Hemi Street Blocks Maintains the original 4.25" bore size while maintaining water flow between the cylinders (non siamesed) for the purpose of improved cooling and sealing durability. As an added feature, if you want to drop in a Hemi where a Big Block used to be, select the block that has ears cast and drilled on the sides to accommodate the Big Block engine mounts (P5007669AB). P5007667AB 426 Hemi Cast Iron Street Block- Rough Bored at 4.19" P5007668AB 426 Hemi Cast Iron Street Block- Finish Bored at 4.25" P5007669AB 426 Hemi Cast Iron Street Block- Finish Bored 4.25" Cast/Drilled Ears For Big Block Engine Mount P5007648AB 426 Hemi Cast Iron Street Block- No Tappet Machining P5007670AB Stress-Relieved 426 Hemi Cast Iron Street Block- Rough Bored at 4.19"
	Cast Iron Hemi Siamesed-Bore Blocks The Cast Iron Siamesed-Bore 426 Hemi Blocks give engine builders the flexibility for a larger bore. These blocks can be bored to the stock size of (4.25", but are specifically designed to be board larger. Mopar Performance recommends that you sonic check each block if you approach or exceed the 4.50" bore diameters. P5007622AB 426 Hemi Cast Iron Siamesed-Bore Block- Rough Bored at 4.19" P5007623AB 426 Hemi Cast Iron Siamesed-Bore Block- Rough Bored at 4.498" *P5007627AB 426 Hemi Cast Iron Siamesed-Bore Block- Raised Cam, Rough Bored at 4.498"
ENGINE BLOCK COMPONENTS A. Rear Main Bearing Seal Retainer Kit Rear Main Bearing Seal Retainer Kit contains Rear Main Seal Retainer, Retainer Bolts and Seal Package. P4529732 Rear Main Bearing Seal Retainer (426 Hemi® and Big Block) B. Oil Seal Package Oil Seal Package includes crank seals and installation tool. P4271961 Oil Seal Package (426 Hemi and Big Block) C. Block Hardware Package This Block Hardware Package includes all necessary dowels, plugs, bushings and keys, as well as core plugs, rear cam bearing plug, drive gear bushing and head dowels. P5249259 Block Hardware Package (426 Hemi andBig Block) D. Freeze Plugs These round, press-in engine block Freeze Plugs ﬁt standard or Mopar Performance race cast iron blocks. P5249708 Brass Freeze Plugs (426 Hemi and Big Block) E. Engine Teardown Gasket Set Engine Teardown Gasket Set includes all gaskets needed for complete Hemi engine teardown. Includes oil pan, cylinder head, valve cover, timing chain case cover, intake manifold and oil pump gaskets. P3412083 Engine Teardown Gasket Set (1966 and Later 426 Hemi)
	CRANKSHAFTS AND ACCESSORIES A. Forged Crankshafts — Machined High-strength, high-quality Forged Crankshafts machined from 4340 steel. For high-performance race applications. Eight-bolt ﬂange. P5007251 Forged Race Crankshaft — 3.75" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi®, Wedge, “RB”) P5007250 Forged Race Crankshaft — 4.15" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi, Wedge, “RB”) B. Crank Key Package This Crank Key Package locates crank sprocket on the nose of the crank. Contains 2 keys. P5249822 Crank Key Package (426 Hemi, Big Block, Small Block, Slant Six) C. Crank Bolt Packages These Crank Bolt Packages are used to attach the Damper to the Crankshaft. P5249557AB Crank Bolt Package- 2.25" Length (426 Hemi, Big Block, Small Block, Aftermarket Dampers) P5249562 Thin Damper Crank Bolt Package- 1.25" Length (426 Hemi and Big Block) VIBRATION DAMPERS D. Steel Vibration Damper This Steel Vibration Damper features a steel ring and a universal 6-bolt front pulley mount pattern. SFI approved. P5249699 Steel Vibration Damper (1966–71 426 Hemi) E. Thin Crank Vibration Damper The Thin Crank Vibration Damper is designed for forged cranks and used primarily in Big Block and Hemi engines. Features 90° index markings and a symmetrical 6-bolt pattern for pulley attachment. On pre-1972 engines with stock pulleys, minor modiﬁcations will be needed to attach bottom pulley. Not SFI approved. Must use 383/440 engine pulleys (not available through Mopar). P3830183 Thin Crank Vibration Damper (426 Hemi and Big Block) F. Damper Degree Timing Tape Damper Degree Timing Tape is marked in 90° increments. Self-adhesive strip adheres to crank vibration damper for clear identiﬁcation of marks. Permits initial total spark advance up to 60° instead of only 10°-15° as on chain case timing tab. P4529070AB Damper Degree Timing Tape Note: Damper not included. G. Oil Slinger This Oil Slinger protects front seal from excessive oil contact. Forces lubricant oil into chain. P5249636 Oil Slinger (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6)
ROLLER TIMING CHAIN AND SPROCKETS A. Double Roller Chains and Sprocket Sets High-Strength Double Roller Chain and Sprocket Sets provide added durability and decreased rotational friction versus the production silent chains. Three machined keyways in crank sprocket adjust the cam timing. Kits includes Magna-Fluxed Sprockets and Roller Timing Chain. P4452815 All-Out Race Chain and Sprockets- 3-Bolt Mount, Standard Size (426 Hemi® and Big Block) P5249269 Double Roller Chain and Sprockets- 3-Bolt Mount (426 Hemi, Big Block) B. Chrome-Plated Front Timing Chain Cover Chrome-Plated Front Timing Chain Cover includes cover, seal and gasket. P4349816 Chrome-Plated Front Timing Chain Cover (1968-91 426 Hemi and Big Block) C. Chrome Bolt Package for Front Timing Cover Engine chrome dress-up projects are incomplete without chrome bolts. P4452795 Chrome Bolt Package for Front Timing Cover (426 Hemi and Big Block) D. Front Cover Gasket and Seal P4876280 Front Cover Seal (426 Hemi, Big Block, Small Block) P4876769 Front Cover Gasket (426 Hemi and Big Block) PISTONS AND CONNECTING RODS E. Forged Aluminum Piston This Forged Aluminum Piston features valve notches and ﬂoating pin. Top and Second rings measure 1/16", while oil rings measure 3/16". P4876026 Siamesed Forged Piston — 4.500" Bore, 4.500" Stroke, 6.860" Rod, 12.5:1 CR (426 Hemi) F. Forged Steel Connecting Rod* This durable connecting rod is forged from 4340 super high-strength steel as a single piece. Includes high-strength bolts. P5249898 Forged Steel Connecting Rod — Floating Pin, 6.86" Center-to-Center; Sold Individually (426 Hemi)
CAMSHAFTS AND LIFTERS A. Purple Shaft Camshafts All Mopar Performance cams are designed, developed, dyno’d, and track tested by engineers. These cams are developed for increased power and rpm potential while maintaining reliability and the best possible low-speed characteristics, including torque and idle quality. These Purple Shaft Cams offer the best horsepower to dollar-spent value. Each cam package contains the cam, cam lube, instruction sheet, and tappets. P4529315 Hydraulic Camshaft P4529316 Mechanical Camshaft
	B. Camshaft Bearings Complete engine set of Camshaft Bearings P5249711 Camshaft Bearings- Babbit Applications (426 Hemi® and Big Block) Camshaft Sprocket Bolts (Not Pictured) P5007801 NEW! Camshaft Sprocket Bolt Kit- for 3-Bolt Mounting, Includes 3 Bolts (426 Hemi, Big Block) P6030269 Camshaft Sprocket Bolt — Sold Individually (426 Hemi and Big Block) C. Tappets These Mopar Performance Tappets are sold individually. P4006767 Hydraulic Tappet (Hemi and Big Block) P2843177 Mechanical Tappet — 0.005" Undersize, Race/Street Applications (Hemi, Big Block, Small Block) Roller Tappet Set (Not Pictured)* Roller Tappet Set includes matched pair with guide bar. P4452920 Roller Tappet Set (Hemi and Big Block) D. Offset Camshaft Bushing Set* Offset Camshaft Bushing Set includes 5 bushings; 2°, 4°, 6°, 8° offset, plus 1 on-center bushing. P3690936 Offset Camshaft Bushing Set (426 Hemi, Big Block, Slant Six) Note: Color guide only — check installations with dial indicator. Gold = 2°, Copper = 4°, Silver = 6°, Black = 8°. E. Pushrods* Engineered to be installed in your Hemi engine rebuilding project. These 3/8" diameter Pushrods are sold as complete engine sets or individually for service. P4529561 Hydraulic Pushrods — 10.47" Intake, 11.45" Exhaust, Set of 16 P4529547 Hydraulic Pushrod — 10.47" Intake, Sold Individually P4529548 Hydraulic Pushrod — 11.45" Exhaust, Sold Individually P4529549 Mechanical Pushrod — 10.65" Intake, Sold Individually
CYLINDER HEADS, GASKETS AND HARDWARE A. Aluminum Cylinder Heads Hemi® Aluminum Cylinder Heads are interchangeable with the production cast iron head, and offer a weight reduction of 50 lbs. per engine set. Each features a single plug per cylinder (capability for dual), a common 2.25" intake and 1.94" exhaust valve machining, and a 170 cc combustion chamber. Includes valve seats and guide inserts. Assembly includes Valves, Springs, Retainers and Keepers. P4876857 Aluminum Cylinder Head Assembly (528 Hemi) P4529336 Aluminum Bare Machined Head (426 Hemi) B. Cast Iron Cylinder Heads Hemi Cast Iron Cylinder Heads are designed for more power. Stiffer and stronger than original, increased material permits porting for improved airﬂow. They feature the same outward appearance as the original 1966–1971 heads (except shape of alternator boss). All components attach the same as original (intake, exhaust, valve guides, seats, rocker gear, etc.). Features 170 cc combustion chamber and 2.25" intake and 1.94" exhaust valve machining. P4876855 Cast Iron Cylinder Head Assembly (426 Hemi) P4529898 Cast Iron Bare Machined Head (426 Hemi) C. Cast Iron Head Steel Shim Gaskets These Cylinder Head Shim Gaskets are sold in pairs. P4120247 Cast Iron Cylinder Head Steel Shim Gaskets — 0.020" Compression Thickness D. Composition Material Cylinder Head Gaskets Hemi Composition Material Cylinder Head Gaskets can be used for replacement or competition applications up to 12.5:1 compression ratio. These premuim high-quality head gaskets offer maximum sealing for standard and high-compression (12.5:1) Hemi engines. They have thickness of 0.040" to 0.042" and are sold in pairs. P4529456 Composition Material Cylinder Head Gaskets — 4.250"–4.310" Bore Range P4876071 Composition Material Cylinder Head Gaskets — 4.380"–4.500" Bore Range E. Cylinder Head Hardware Kit Cylinder Head Hardware Kit contains 4 head freeze plugs and 10 dowel pins for the rocker shaft stands. P5249570 Cylinder Head Hardware Kit F. Cylinder Head Bolt Set Head bolts and washers for one cylinder head. P4529978 Cylinder Head Bolt Set G. Hardened Washer Sets Hardened Washer Sets for use with Head Bolts and Main Caps. They are sold in sets of 20. P4120456 Hardened Washer Set — 3/8" (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep® Engines) P4120459 Hardened Washer Set — 1/2" (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines)
	VALVE COVERS AND HARDWARE A. Black Wrinkle Cast Aluminum Valve Cover Set Dress up your 426 Hemi® with this handsome Black Wrinkle Cast Aluminum Hemi Valve Cover Set. Painted black wrinkle and ﬁnned with Hemi logo cast in. For single-plug cylinder head applications. Uses Street Hemi valve cover rail. Gaskets included. P5007796 Black Wrinkle Cast Aluminum Valve Cover Set (1966 and Later Street Hemi) B. Chrome Valve Cover Set Dress up your Hemi engine compartment with this Chrome Valve Cover Set. Set features quality chrome plating and includes 2 valve covers and gaskets. P4529338 Chrome Valve Cover Set (426 Hemi) P4120353 Replacement Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1966-Up Street Hemi) C. Stamped Steel O.E. Black Wrinkle Valve Cover Sets Mopar Performance takes another giant step to help the restoration crowd with these O.E. Black Wrinkle 426 Street Hemi Valve Cover Sets. Original equipment for all 1966–1971 426 Street Hemi engines, these stamped steel black wrinkle covers have the spark plug wire brackets and rubber coated alternator wiring looms. Sets include left and right valve covers, gaskets and hold-down studs and nuts. P4529399 also includes chrome breather cap, metal PCV valve and chrome PCV cap. P4510577 also includes chrome oil ﬁll cap and grommets for PCV and breather. P4510577 NEW! Black Wrinkle Valve Cover Set- Original Equipment (1970–71 426 Hemi) P4529339 Black Wrinkle Valve Cover Set- Original Equipment (1966–69 426 Hemi) P4120353 Replacement Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1966–Up Street Hemi) D. Replacement Race Valve Cover Gaskets These Replacement Race Valve Cover Gaskets are for use with 1964–65 Hemi engines. P4120085 Replacement Race Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1964–65 Hemi) E. Service Parts for Cast Aluminum Valve Covers These parts will come in handy when servicing Mopar Performance Cast Aluminum Valve Covers. P5007499 Breather — Bolt-On, Pictured (Valve Cover P5007796) P5249947 Stud and Nut Kit — Long P5249949 Oil Filter Cap — Screw-In F. Valve Cover Stud and Nut Package This Valve Cover Stud and Nut Package contains 20 studs and 20 nuts, and will allow you to retain factory valve covers. For use with all stamped (sheet metal) covers. P4529897 Valve Cover Stud and Nut Package (1966–71 426 Hemi) G. Chrome Breather Cap Chrome Breather Cap for use with Mopar Performance Stamped Steel Hemi Black Wrinkle and Chrome Valve Covers (P4529338, P4510577, P4529339). *P4529896 Push-In Style Breather Cap (1964–69 426 Hemi)
A. PCV Package Use this original equipment 426 Hemi® PCV Package for restoration or repair of Hemi valve covers. This factory reissue kit contains one PCV valve cap, a PCV valve and nut, and one PCV valve retaining spring. Push-on style PCV valve cap is chrome and ﬁts 1964–1969 Hemi valve covers, including Mopar Performance chrome or black wrinkle valve cover kits. Also can be used to service non-Hemi 60s-era push-on style PCV valves. P4529895 PCV Package (1964–69 426 Hemi) VALVES AND VALVE HARDWARE* B. Valves These stainless valves have swirl-polished underheads that have no ﬂat or ski jump areas. They feature a 5/16" stem diameter and 1 square groove. For use with cast iron and aluminum cylinder heads. P5249203 Intake Valve — 2.25" Diameter, 5.40" Stem Length (426 Hemi) P5249204 Exhaust Valve — 1.94" Diameter, 4.86" Stem Length (426 Hemi) C. Valve Seals Made of high-temp Viton material, these Valve Seals feature a full or semi-umbrella shape for best dual-purpose use. Helps prevent oil seepage down valve guides. Not recommended for use with dual valve springs. Sold in sets of 16. P5249661 Valve Seals — 5/16" Stem Size, 0.530" Guide (426 Hemi, 5.2L/5.9L Truck Magnum/ Jeep® Engines) D. Valve Stem Lash Caps These lash caps are 0.080" thick and ﬁt between the end of the valve and the rocker arm tip. They are made of hardened steel for improved rocker tip durability. Larger area than stock valve tip to help spread the rocker loads. Sold in sets of 16. P4120626 Valve Stem Lash Caps — 3/8" Stem (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines) P4120635 Valve Stem Lash Caps — 5/16" Stem (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines) E. Valve Guides These silicon-bronze alloy Valve Guides are designed for aluminum heads. They must be pressed into the head once it is prepped. To replace guides in aluminum heads requires removal of the old guide and some prep to resize the guide holes. Guide ID must be sized for the valve stem once pressed into the head. Guides can be used to modify, rebuild or repair aluminum heads. Sold individually. P4876709 Valve Guide — 5/16" Valve Stem, Intake P4876710 Valve Guide — 5/16" Valve Stem, Exhaust
F. Valve Keepers (Locks) These single groove style Hemi Valve Keepers are made from hardened material. They feature a 5/16" stem diameter and can be used for restoration or performance applications. Sold as cylinder head sets of 16 pieces (note that two sets are required for all V8 engines). P4120634 Valve Keepers P4529038 Valve Keepers
A. Valve Springs High-pressure Valve Springs can be used on exhaust and intake valves for all high-performance applications. They feature a shorter fully compressed height and allow for increased valve lift. Springs maintain spring load at higher rpms. A must for high-performance cams. Sold individually. P4286812 Valve Spring P3690933 Valve Spring P5249848 Valve Spring P2806077 Valve Spring P4876064 Valve Spring P2946353 Valve Spring P5249849 Valve Spring P4007536 Valve Spring Note: With a single spring, the damper is installed inside the main spring; with a dual spring, the damper is installed between the inner and outer springs. There are no dampers in the triple springs. The retainers listed are the basic recommendation. Check the retainer listing for other options.
B. Valve Spring Retainers These Valve Spring Retainers for Hemi® engines are available in three levels of performance: steel for restoration, chrome moly for heavy-duty applications and titanium for top-level race performance. Sold individually. P4452769 Steel Valve Spring Retainer P4529288 Chrome Moly Valve Spring Retainer P4120785 Titanium Valve Spring Retainer (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) P4286775 Titanium Valve Spring Retainer (426 Hemi, Big Block, Small Block)
	ROCKER SHAFTS, SUPPORTS AND HARDWARE A. Rocker Shafts These chrome Rocker Shafts are for use with mechanical valve gear. They are sold individually. P5249631 Rocker Shaft — Intake, On-Center P5249632 Rocker Shaft — Exhaust, On-Center B. Rocker Shaft Supports Blue anodized, extruded aluminum Rocker Shaft Supports for 426 Hemi®. Complete engine set includes 10 pieces plus hardware. P5249505 Rocker Shaft Supports C. Rocker Shaft End Plugs Rocker Shaft End Plugs are sold as a set of 4. They do not ﬁt aftermarket rocker shafts. P5249633 Rocker Shaft End Plugs (426 Hemi and Big Block) D. Rocker Shaft Springs Rocker Shaft Springs for use on all production-based Hemi valve gear. Used to locate rockers on the shaft. Includes 14 long springs and 2 short springs. Package contains 1 engine set. P4452827 Rocker Shaft Springs (426 Hemi) ROCKER ARMS AND HARDWARE E. Mechanical Rocker Arms These Rocker Arms are made of SAE 1041 forged steel. They feature hardened valve tip pads to help prevent scufﬁng. Can serve as a replacement for original production rockers. Fits both cast iron and aluminum heads. Sold individually. P4529705 Mechanical Rocker Arm Package- Production Ratio, Intake P4529706 Mechanical Rocker Arm Package- Production Ratio, Exhaust P4529707 Mechanical Rocker Arm Package- 1.7 Ratio, Exhaust P4529708 Mechanical Rocker Arm Package- 1.65 Ratio, Exhaust Note: High-Ratio rockers may require grinding on block and head for pushrod clearance. F. Stainless Steel Roller Tip Rocker Arms Rocker Arms are made from high-strength, investment grade cast stainless steel. Each features a roller tip to reduce friction and improve geometry. Designed for drag racing and high strength, they use standard Hemi rocker ratios. Sold individually. P5249603 Stainless Steel Roller Tip Rocker — Intake P5249604 Stainless Steel Roller Tip Rocker — Exhaust G. Rocker Arm Adjusting Screw and Nut Set Rocker Arm Adjusting Screw and Nut Set includes 8 screws and nuts. Note that 2 sets are required for V8 engines. P5007444AB Rocker Arm Screw/Nut Set (426 Hemi, Big Block, Small Block, 2.2L/2.5L, Slant Six, 3.9L V6)
INTAKE MANIFOLDS AND HARDWARE A. NEW! Dual Quad Intake- 8-bbl This new aluminum in-line Dual Quad Hemi® Intake Manifold is based on the marine version and is built from the original tooling! Machined to accept aftermarket AFB Carburetors or Holley Carburetors (P4452778 rear, P4452779 front), this manifold will ﬁt production 426 Hemi heads and has provisions for manifold heat and power brakes. It retains the stock height as the production 1966–71 Street Hemi AFB Intake Manifold. Production AFB air cleaner baseplate/lid will need to be changed or modiﬁed. Some O.E and aftermarket linkage components and fuel lines are needed to complete the installation. P4510633 Aluminum Dual Quad Intake — Dual 4-bbl Carbs (426 Hemi) Note: Will not accept original equipment AFB carburetors. B. Dual Plane Intake- 4-bbl* This revised 4-bbl aluminum Dual Plane Intake Manifold features a rectangle port and ﬁts all Hemi 426/472/528 engines. Now with stock exhaust heat located on rear of manifold, just like the original dual 4-bbl production in-line manifold. P4876188 Aluminum Dual Plane Intake — 4-bbl Carb (426, 472, 528 Hemi) C. Cross Ram Intake- 8-bbl* This aluminum Cross Ram Intake Manifold features rectangle ports and is designed for (2) 4-bbl carburetors. Offers signiﬁcant performance increase over the production Cross Ram Manifolds due to increased runner volume and plenum area. Uses Holley Carburetors (P4452778 and P4452779). *P5007534 Aluminum Cross Ram Intake — Dual 4-bbl Carbs (426, 472, 528 Hemi)

	A. Intake Manifold Gasket Sets Custom-ﬁt Intake Gasket Sets come complete to service one engine (includes gaskets, end seals, o-rings and distributor seal where applicable). P4120087 Intake Manifold Gasket Set- 0.060" Thick (426 Hemi® D4-D6 and Mullen Ported) P4120086 Intake Manifold Gasket Set- 0.060" Thick (426 Hemi Except D4-D6) P4529534 Intake Manifold Gasket Set- 0.090" Thick (426 Hemi Except D4-D6) B. Intake Manifold Heat Shield Original equipment Heat Shield for all 426 Street Hemi Intake Manifolds. Bolts to the bottom of the Intake Manifold to prevent hot engine oil from heating the manifold and robbing horsepower. Also ﬁts Aluminum Dual Plane Intake Manifold (P4876188). P4529431 Intake Manifold Heat Shield (426 Hemi) C. Intake Manifold Screw Set Set of 16 Allen screws and washers to attach the race Hemi Cross Ram Manifold. P4529330 A-990 Cross Ram Intake Manifold Screw Set (426 Hemi) D. Intake Manifold Plug Package Intake Manifold Plug Package consists of 8 manifold plugs. Used in Max Wedge and Hemi Cross Ram Intake Manifolds. P5249926 Cross Ram Intake Manifold Plug Package (426 Hemi and Max Wedge) CARBURETORS E. Cross Ram Holley Carburetors Holley Carburetors were the “go fast” choice for the legendary Super Stock 426 Hemi engine. Mopar Performance brings back these original equipment Holley Carbs for 1964, 1965 and 1968 race Hemis. These are exact reissues of the original carburetors. P4452778 Cross Ram Carburetor- Right Hand (1964–65, 1968 Race 426 Hemi) P4452779 Cross Ram Carburetor- Left Hand (1964–65, 1968 Race 426 Hemi) F. Air Horns These Air Horns are for use with Holley Hemi Cross Ram Carburetors. Perfect for Super Stock competition or restoration. Sold as a pair, includes front and rear. P5007809 Air Horns (426 Hemi) G. NEW! Cross Ram Linkage* This Cross Ram Linkage is for use with Hemi Cross Ram Intake Manifold (P5007534) and Holly carburetors (P4452778 and P4452779). P4510635 Cross Ram Linkage (426 Hemi)
OILING COMPONENTS A. Oil Pans Oil Pans contain a factory engineered and approved oil pan, drain plug and washer. Center sump style is used on passenger car applications. Windage Trays may be used if desired. P5007816 NEW! Oil Pan- 8-Quart, Center Sump (426 Hemi® and Big Block) P4529884 Oil Pan- 6-Quart, Center Sump (1970–71 426 Hemi E-Body) B. Windage Trays Windage Trays are designed to provide improved engine lubrication by reducing the interior windage at higher engine speed. Packages include tray and two pan gaskets. P4120998 Windage Tray- 3.75" Stroke (426 Hemi and Big Block) P5007345 Windage Tray- 4.15" Stroke (426 Hemi and Big Block) C. Oil Pan Gaskets Note that two are required for Windage Tray applications. P4452099 Race Oil Pan Gasket- Set of 2 (426 Hemi and Big Block) P3412049 Oil Pan Gasket- Sold Individually (426 Hemi and Big Block) D. Oil Pan Bolt Set P4120613 Oil Pan Bolt Set (426 Hemi, Big Block, Small Block) E. Oil Pickup and Screen Assemblies Factory original reissued Hemi Oil Pickup and Screen Assemblies. P5007818 NEW! Oil Pickup and Screen Assembly- 8-Quart, 1/2" Pipe, for Pan P5007816 (426 Hemi, Big Block) P4529566 Oil Pickup and Screen Assembly- 5-Quart,1/2" Pipe (1966–69 426 Hemi) P4529567 Oil Pickup and Screen Assembly- 6-Quart,1/2" Pipe, for Pan P4529884 (1970–71 426 Hemi) P5249818 Oil Pickup and Screen Assembly- 6-Quart,1/2" Pipe, Siamese Bore, not Raised Cam (426 Hemi, “RB”) F. Oil Pressure Relief Spring Oil Pressure Relief Spring increases engine oil pressure over stock spring for high-performance applications. Delivers up to 70 lbs. of oil pressure. Includes a cap and instructions. P4286571 Oil Pressure Relief Spring Set (426 Hemi, Big Block, Slant Six) G. Oil Pump Assembly This high-performance, high-output Oil Pump Assembly provides a 25% increase in oil volume. Ideal in high-performance applications. *P4286590 Oil Pump Assembly (426 Hemi and Big Block)
	A. Distributor Drive Gear Assemblies Distributor/Oil Pump Driveshaft Gear Assemblies feature a hardened tip shaft with full radius blend from hex to round and pinned gears. P3412064 Distributor Drive Gear — Flat Tappet Cams, Milodon Oil System (426 Hemi® and Big Block) P3571071 Distributor Drive Gear- Flat Tappet Cams (426 Hemi and Big Block) P3690875 Distributor Drive Gear- Roller Tappet, Aluminum-Bronze Gear (426 Hemi and Big Block) P3690876 Distributor Drive Gear- Roller Tappet, Aluminum-Bronze Gear, Milodon System (426 Hemi, Big Block) B. Tube and Peen Tool Package Tube and Peen Tool Package block off oil to right-side tappet bores. Required for race engines with high-lift roller cams. P4452812 Tube and Peen Tool Package (426 Hemi and Big Block) C. High-Performance Oil Filter P4452890 High-Performance Oil Filter — Black Finish (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) D. Race Oil Filter* High-performance, heavy-duty Race Oil Filter has a thicker canister with high burst strength. P4529190 Race Oil Filter — Black Finish (426 Hemi, Big Block, Small Block) E. Restoration Oil Filters Mopar Performance has reissued these service replacement oil ﬁlters, used in the 1960s and 1970s. The high-performance white ﬁlter (P4529805) was recommended for use in competition from 1965–74. P4529187 Restoration Oil Filter (426 Hemi, Big Block, Small Block) P4529805 High-Performance Restoration Oil Filter (426 Hemi, Big Block, Small Block) Note: These ﬁlters may not ﬁt some V8 applications (those after 1972 requiring short ﬁlters). F. Oil Pump Priming Shaft Special hardened steel priming shaft ﬁts on any 3/8" or larger drill. Insert shaft into hole where distributor ﬁts. Pressurizes oil galleys to ensure against dry starts and ruining your engine. P4286800 Oil Pump Priming Shaft (V8) COOLING COMPONENTS G. Lightweight Aluminum Water Pump Lightweight Aluminum Water Pump features the same dimensions as stock, and an 8 Blade Impeller. P5007643AB Lightweight Aluminum Water Pump (426 Hemi and Big Block) H. Aluminum Water Pump Housing P4286900 Aluminum Water Pump Housing (1968–78 426 Hemi and Big Block) P2206445 Bracket for Alternator (426 Hemi and Big Block)
A. Water Pump Installation Kit Kit includes water pump gasket, pump housing gasket, plugs, water pump screws, and long and short housing screws. P5007449 Water Pump Installation Kit (426 Hemi® and Big Block) B. Chrome Water Pump and Housing Bolts Chrome dress-up projects are incomplete without chrome bolts. P5007621 Water Pump and Housing Bolts (426 Hemi and Big Block) C. Front Cover Gasket and Seal P4876280 Front Cover Seal (426 Hemi, Big Block, Small Block) P4876769 Front Cover Gasket (426 Hemi and Big Block) D. 90° Water Neck Outlet Cast aluminum 90° Water Neck Outlet provides greater ﬂexibility in routing cooling system hoses and improves the appearance of the engine compartment. It features 3-direction capability, which is ideal for compact engine compartments. P5249191 90° Water Neck Outlet (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) E. Chrome Water Neck This high-quality Chrome Water Neck is made of heavy-duty material. Includes gasket and 2 chrome bolts. P4286759 Chrome Water Neck (to 1978 426 Hemi, Big Block, Small Block) F. Viscous Fan Package Most late 1960s and early 1970s factory-built muscle cars were equipped with viscous fans for cooling purposes. The package provides thermostatically controlled cooling, includes a lightweight balanced fan, and takes the least amount of horsepower from the engine. Offers up to 15 horsepower gain on typical high-performance V8s. P4120758 Viscous Fan Package (426 Hemi, Big Block, Small Block) G. NEW! Radiator Cooling Fan Shrouds These Restoration Radiator Cooling Fan Shrouds measure 26.00". P2785434 Restoration Radiator Cooling Fan Shroud (1967–69 426 Hemi, 383/440 Big Block B-Body) P2998326 Restoration Radiator Cooling Fan Shroud (1970–73 426 Hemi, 383/440 Big Block B- and E-Body) H. Thermostat This heavy-duty thermostat can handle increased heat management duties in high-performance engines. Comes with replacement gasket. *P4876307 180° Thermostat (to 1978 426 Hemi, Big Block, Small Block, Slant Six)


CAST IRON HEMI BLOCKS We've made the best! Mopar Performance Hemi engine blocks have undergone revised, updated tooling. They are machined to closer tolerances than ever, and feature increased material in the thrust area. Just check out the features: 100% CNC Machined for accuracy and quality Brand-new castings made from high nickel alloy cast iron Thicker deck surface for improved rigidity and gasket sealing Ductile iron main caps, which are cross-bolted on the 3 center caps on all the blocks Stock 10.72"deck height allows for installtion of all standard components Machined to accept all standard production pieces, such as heads, manifolds, water pumps, tappets, cams and distributors *Machined and cast in various configurations to meet your specific requirements	Cast Iron Hemi Street Blocks Maintains the original 4.25" bore size while maintaining water flow between the cylinders (non siamesed) for the purpose of improved cooling and sealing durability. As an added feature, if you want to drop in a Hemi where a Big Block used to be, select the block that has ears cast and drilled on the sides to accommodate the Big Block engine mounts (P5007669AB). P5007667AB 426 Hemi Cast Iron Street Block- Rough Bored at 4.19" P5007668AB 426 Hemi Cast Iron Street Block- Finish Bored at 4.25" P5007669AB 426 Hemi Cast Iron Street Block- Finish Bored 4.25" Cast/Drilled Ears For Big Block Engine Mount P5007648AB 426 Hemi Cast Iron Street Block- No Tappet Machining P5007670AB Stress-Relieved 426 Hemi Cast Iron Street Block- Rough Bored at 4.19"
	Cast Iron Hemi Siamesed-Bore Blocks The Cast Iron Siamesed-Bore 426 Hemi Blocks give engine builders the flexibility for a larger bore. These blocks can be bored to the stock size of (4.25", but are specifically designed to be board larger. Mopar Performance recommends that you sonic check each block if you approach or exceed the 4.50" bore diameters. P5007622AB 426 Hemi Cast Iron Siamesed-Bore Block- Rough Bored at 4.19" P5007623AB 426 Hemi Cast Iron Siamesed-Bore Block- Rough Bored at 4.498" *P5007627AB 426 Hemi Cast Iron Siamesed-Bore Block- Raised Cam, Rough Bored at 4.498"
ENGINE BLOCK COMPONENTS A. Rear Main Bearing Seal Retainer Kit Rear Main Bearing Seal Retainer Kit contains Rear Main Seal Retainer, Retainer Bolts and Seal Package. P4529732 Rear Main Bearing Seal Retainer (426 Hemi® and Big Block) B. Oil Seal Package Oil Seal Package includes crank seals and installation tool. P4271961 Oil Seal Package (426 Hemi and Big Block) C. Block Hardware Package This Block Hardware Package includes all necessary dowels, plugs, bushings and keys, as well as core plugs, rear cam bearing plug, drive gear bushing and head dowels. P5249259 Block Hardware Package (426 Hemi andBig Block) D. Freeze Plugs These round, press-in engine block Freeze Plugs ﬁt standard or Mopar Performance race cast iron blocks. P5249708 Brass Freeze Plugs (426 Hemi and Big Block) E. Engine Teardown Gasket Set Engine Teardown Gasket Set includes all gaskets needed for complete Hemi engine teardown. Includes oil pan, cylinder head, valve cover, timing chain case cover, intake manifold and oil pump gaskets. P3412083 Engine Teardown Gasket Set (1966 and Later 426 Hemi)
	CRANKSHAFTS AND ACCESSORIES A. Forged Crankshafts — Machined High-strength, high-quality Forged Crankshafts machined from 4340 steel. For high-performance race applications. Eight-bolt ﬂange. P5007251 Forged Race Crankshaft — 3.75" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi®, Wedge, “RB”) P5007250 Forged Race Crankshaft — 4.15" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi, Wedge, “RB”) B. Crank Key Package This Crank Key Package locates crank sprocket on the nose of the crank. Contains 2 keys. P5249822 Crank Key Package (426 Hemi, Big Block, Small Block, Slant Six) C. Crank Bolt Packages These Crank Bolt Packages are used to attach the Damper to the Crankshaft. P5249557AB Crank Bolt Package- 2.25" Length (426 Hemi, Big Block, Small Block, Aftermarket Dampers) P5249562 Thin Damper Crank Bolt Package- 1.25" Length (426 Hemi and Big Block) VIBRATION DAMPERS D. Steel Vibration Damper This Steel Vibration Damper features a steel ring and a universal 6-bolt front pulley mount pattern. SFI approved. P5249699 Steel Vibration Damper (1966–71 426 Hemi) E. Thin Crank Vibration Damper The Thin Crank Vibration Damper is designed for forged cranks and used primarily in Big Block and Hemi engines. Features 90° index markings and a symmetrical 6-bolt pattern for pulley attachment. On pre-1972 engines with stock pulleys, minor modiﬁcations will be needed to attach bottom pulley. Not SFI approved. Must use 383/440 engine pulleys (not available through Mopar). P3830183 Thin Crank Vibration Damper (426 Hemi and Big Block) F. Damper Degree Timing Tape Damper Degree Timing Tape is marked in 90° increments. Self-adhesive strip adheres to crank vibration damper for clear identiﬁcation of marks. Permits initial total spark advance up to 60° instead of only 10°-15° as on chain case timing tab. P4529070AB Damper Degree Timing Tape Note: Damper not included. G. Oil Slinger This Oil Slinger protects front seal from excessive oil contact. Forces lubricant oil into chain. P5249636 Oil Slinger (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6)
ROLLER TIMING CHAIN AND SPROCKETS A. Double Roller Chains and Sprocket Sets High-Strength Double Roller Chain and Sprocket Sets provide added durability and decreased rotational friction versus the production silent chains. Three machined keyways in crank sprocket adjust the cam timing. Kits includes Magna-Fluxed Sprockets and Roller Timing Chain. P4452815 All-Out Race Chain and Sprockets- 3-Bolt Mount, Standard Size (426 Hemi® and Big Block) P5249269 Double Roller Chain and Sprockets- 3-Bolt Mount (426 Hemi, Big Block) B. Chrome-Plated Front Timing Chain Cover Chrome-Plated Front Timing Chain Cover includes cover, seal and gasket. P4349816 Chrome-Plated Front Timing Chain Cover (1968-91 426 Hemi and Big Block) C. Chrome Bolt Package for Front Timing Cover Engine chrome dress-up projects are incomplete without chrome bolts. P4452795 Chrome Bolt Package for Front Timing Cover (426 Hemi and Big Block) D. Front Cover Gasket and Seal P4876280 Front Cover Seal (426 Hemi, Big Block, Small Block) P4876769 Front Cover Gasket (426 Hemi and Big Block) PISTONS AND CONNECTING RODS E. Forged Aluminum Piston This Forged Aluminum Piston features valve notches and ﬂoating pin. Top and Second rings measure 1/16", while oil rings measure 3/16". P4876026 Siamesed Forged Piston — 4.500" Bore, 4.500" Stroke, 6.860" Rod, 12.5:1 CR (426 Hemi) F. Forged Steel Connecting Rod* This durable connecting rod is forged from 4340 super high-strength steel as a single piece. Includes high-strength bolts. P5249898 Forged Steel Connecting Rod — Floating Pin, 6.86" Center-to-Center; Sold Individually (426 Hemi)
CAMSHAFTS AND LIFTERS A. Purple Shaft Camshafts All Mopar Performance cams are designed, developed, dyno’d, and track tested by engineers. These cams are developed for increased power and rpm potential while maintaining reliability and the best possible low-speed characteristics, including torque and idle quality. These Purple Shaft Cams offer the best horsepower to dollar-spent value. Each cam package contains the cam, cam lube, instruction sheet, and tappets. P4529315 Hydraulic Camshaft P4529316 Mechanical Camshaft
	B. Camshaft Bearings Complete engine set of Camshaft Bearings P5249711 Camshaft Bearings- Babbit Applications (426 Hemi® and Big Block) Camshaft Sprocket Bolts (Not Pictured) P5007801 NEW! Camshaft Sprocket Bolt Kit- for 3-Bolt Mounting, Includes 3 Bolts (426 Hemi, Big Block) P6030269 Camshaft Sprocket Bolt — Sold Individually (426 Hemi and Big Block) C. Tappets These Mopar Performance Tappets are sold individually. P4006767 Hydraulic Tappet (Hemi and Big Block) P2843177 Mechanical Tappet — 0.005" Undersize, Race/Street Applications (Hemi, Big Block, Small Block) Roller Tappet Set (Not Pictured)* Roller Tappet Set includes matched pair with guide bar. P4452920 Roller Tappet Set (Hemi and Big Block) D. Offset Camshaft Bushing Set* Offset Camshaft Bushing Set includes 5 bushings; 2°, 4°, 6°, 8° offset, plus 1 on-center bushing. P3690936 Offset Camshaft Bushing Set (426 Hemi, Big Block, Slant Six) Note: Color guide only — check installations with dial indicator. Gold = 2°, Copper = 4°, Silver = 6°, Black = 8°. E. Pushrods* Engineered to be installed in your Hemi engine rebuilding project. These 3/8" diameter Pushrods are sold as complete engine sets or individually for service. P4529561 Hydraulic Pushrods — 10.47" Intake, 11.45" Exhaust, Set of 16 P4529547 Hydraulic Pushrod — 10.47" Intake, Sold Individually P4529548 Hydraulic Pushrod — 11.45" Exhaust, Sold Individually P4529549 Mechanical Pushrod — 10.65" Intake, Sold Individually
CYLINDER HEADS, GASKETS AND HARDWARE A. Aluminum Cylinder Heads Hemi® Aluminum Cylinder Heads are interchangeable with the production cast iron head, and offer a weight reduction of 50 lbs. per engine set. Each features a single plug per cylinder (capability for dual), a common 2.25" intake and 1.94" exhaust valve machining, and a 170 cc combustion chamber. Includes valve seats and guide inserts. Assembly includes Valves, Springs, Retainers and Keepers. P4876857 Aluminum Cylinder Head Assembly (528 Hemi) P4529336 Aluminum Bare Machined Head (426 Hemi) B. Cast Iron Cylinder Heads Hemi Cast Iron Cylinder Heads are designed for more power. Stiffer and stronger than original, increased material permits porting for improved airﬂow. They feature the same outward appearance as the original 1966–1971 heads (except shape of alternator boss). All components attach the same as original (intake, exhaust, valve guides, seats, rocker gear, etc.). Features 170 cc combustion chamber and 2.25" intake and 1.94" exhaust valve machining. P4876855 Cast Iron Cylinder Head Assembly (426 Hemi) P4529898 Cast Iron Bare Machined Head (426 Hemi) C. Cast Iron Head Steel Shim Gaskets These Cylinder Head Shim Gaskets are sold in pairs. P4120247 Cast Iron Cylinder Head Steel Shim Gaskets — 0.020" Compression Thickness D. Composition Material Cylinder Head Gaskets Hemi Composition Material Cylinder Head Gaskets can be used for replacement or competition applications up to 12.5:1 compression ratio. These premuim high-quality head gaskets offer maximum sealing for standard and high-compression (12.5:1) Hemi engines. They have thickness of 0.040" to 0.042" and are sold in pairs. P4529456 Composition Material Cylinder Head Gaskets — 4.250"–4.310" Bore Range P4876071 Composition Material Cylinder Head Gaskets — 4.380"–4.500" Bore Range E. Cylinder Head Hardware Kit Cylinder Head Hardware Kit contains 4 head freeze plugs and 10 dowel pins for the rocker shaft stands. P5249570 Cylinder Head Hardware Kit F. Cylinder Head Bolt Set Head bolts and washers for one cylinder head. P4529978 Cylinder Head Bolt Set G. Hardened Washer Sets Hardened Washer Sets for use with Head Bolts and Main Caps. They are sold in sets of 20. P4120456 Hardened Washer Set — 3/8" (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep® Engines) P4120459 Hardened Washer Set — 1/2" (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines)
	VALVE COVERS AND HARDWARE A. Black Wrinkle Cast Aluminum Valve Cover Set Dress up your 426 Hemi® with this handsome Black Wrinkle Cast Aluminum Hemi Valve Cover Set. Painted black wrinkle and ﬁnned with Hemi logo cast in. For single-plug cylinder head applications. Uses Street Hemi valve cover rail. Gaskets included. P5007796 Black Wrinkle Cast Aluminum Valve Cover Set (1966 and Later Street Hemi) B. Chrome Valve Cover Set Dress up your Hemi engine compartment with this Chrome Valve Cover Set. Set features quality chrome plating and includes 2 valve covers and gaskets. P4529338 Chrome Valve Cover Set (426 Hemi) P4120353 Replacement Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1966-Up Street Hemi) C. Stamped Steel O.E. Black Wrinkle Valve Cover Sets Mopar Performance takes another giant step to help the restoration crowd with these O.E. Black Wrinkle 426 Street Hemi Valve Cover Sets. Original equipment for all 1966–1971 426 Street Hemi engines, these stamped steel black wrinkle covers have the spark plug wire brackets and rubber coated alternator wiring looms. Sets include left and right valve covers, gaskets and hold-down studs and nuts. P4529399 also includes chrome breather cap, metal PCV valve and chrome PCV cap. P4510577 also includes chrome oil ﬁll cap and grommets for PCV and breather. P4510577 NEW! Black Wrinkle Valve Cover Set- Original Equipment (1970–71 426 Hemi) P4529339 Black Wrinkle Valve Cover Set- Original Equipment (1966–69 426 Hemi) P4120353 Replacement Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1966–Up Street Hemi) D. Replacement Race Valve Cover Gaskets These Replacement Race Valve Cover Gaskets are for use with 1964–65 Hemi engines. P4120085 Replacement Race Valve Cover Gaskets- Rubber Reinforced Cork, 2 Per Set (1964–65 Hemi) E. Service Parts for Cast Aluminum Valve Covers These parts will come in handy when servicing Mopar Performance Cast Aluminum Valve Covers. P5007499 Breather — Bolt-On, Pictured (Valve Cover P5007796) P5249947 Stud and Nut Kit — Long P5249949 Oil Filter Cap — Screw-In F. Valve Cover Stud and Nut Package This Valve Cover Stud and Nut Package contains 20 studs and 20 nuts, and will allow you to retain factory valve covers. For use with all stamped (sheet metal) covers. P4529897 Valve Cover Stud and Nut Package (1966–71 426 Hemi) G. Chrome Breather Cap Chrome Breather Cap for use with Mopar Performance Stamped Steel Hemi Black Wrinkle and Chrome Valve Covers (P4529338, P4510577, P4529339). *P4529896 Push-In Style Breather Cap (1964–69 426 Hemi)
A. PCV Package Use this original equipment 426 Hemi® PCV Package for restoration or repair of Hemi valve covers. This factory reissue kit contains one PCV valve cap, a PCV valve and nut, and one PCV valve retaining spring. Push-on style PCV valve cap is chrome and ﬁts 1964–1969 Hemi valve covers, including Mopar Performance chrome or black wrinkle valve cover kits. Also can be used to service non-Hemi 60s-era push-on style PCV valves. P4529895 PCV Package (1964–69 426 Hemi) VALVES AND VALVE HARDWARE* B. Valves These stainless valves have swirl-polished underheads that have no ﬂat or ski jump areas. They feature a 5/16" stem diameter and 1 square groove. For use with cast iron and aluminum cylinder heads. P5249203 Intake Valve — 2.25" Diameter, 5.40" Stem Length (426 Hemi) P5249204 Exhaust Valve — 1.94" Diameter, 4.86" Stem Length (426 Hemi) C. Valve Seals Made of high-temp Viton material, these Valve Seals feature a full or semi-umbrella shape for best dual-purpose use. Helps prevent oil seepage down valve guides. Not recommended for use with dual valve springs. Sold in sets of 16. P5249661 Valve Seals — 5/16" Stem Size, 0.530" Guide (426 Hemi, 5.2L/5.9L Truck Magnum/ Jeep® Engines) D. Valve Stem Lash Caps These lash caps are 0.080" thick and ﬁt between the end of the valve and the rocker arm tip. They are made of hardened steel for improved rocker tip durability. Larger area than stock valve tip to help spread the rocker loads. Sold in sets of 16. P4120626 Valve Stem Lash Caps — 3/8" Stem (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines) P4120635 Valve Stem Lash Caps — 5/16" Stem (426 Hemi, Big Block, Small Block, Truck Magnum/Jeep Engines) E. Valve Guides These silicon-bronze alloy Valve Guides are designed for aluminum heads. They must be pressed into the head once it is prepped. To replace guides in aluminum heads requires removal of the old guide and some prep to resize the guide holes. Guide ID must be sized for the valve stem once pressed into the head. Guides can be used to modify, rebuild or repair aluminum heads. Sold individually. P4876709 Valve Guide — 5/16" Valve Stem, Intake P4876710 Valve Guide — 5/16" Valve Stem, Exhaust
F. Valve Keepers (Locks) These single groove style Hemi Valve Keepers are made from hardened material. They feature a 5/16" stem diameter and can be used for restoration or performance applications. Sold as cylinder head sets of 16 pieces (note that two sets are required for all V8 engines). P4120634 Valve Keepers P4529038 Valve Keepers
A. Valve Springs High-pressure Valve Springs can be used on exhaust and intake valves for all high-performance applications. They feature a shorter fully compressed height and allow for increased valve lift. Springs maintain spring load at higher rpms. A must for high-performance cams. Sold individually. P4286812 Valve Spring P3690933 Valve Spring P5249848 Valve Spring P2806077 Valve Spring P4876064 Valve Spring P2946353 Valve Spring P5249849 Valve Spring P4007536 Valve Spring Note: With a single spring, the damper is installed inside the main spring; with a dual spring, the damper is installed between the inner and outer springs. There are no dampers in the triple springs. The retainers listed are the basic recommendation. Check the retainer listing for other options.
B. Valve Spring Retainers These Valve Spring Retainers for Hemi® engines are available in three levels of performance: steel for restoration, chrome moly for heavy-duty applications and titanium for top-level race performance. Sold individually. P4452769 Steel Valve Spring Retainer P4529288 Chrome Moly Valve Spring Retainer P4120785 Titanium Valve Spring Retainer (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) P4286775 Titanium Valve Spring Retainer (426 Hemi, Big Block, Small Block)
	ROCKER SHAFTS, SUPPORTS AND HARDWARE A. Rocker Shafts These chrome Rocker Shafts are for use with mechanical valve gear. They are sold individually. P5249631 Rocker Shaft — Intake, On-Center P5249632 Rocker Shaft — Exhaust, On-Center B. Rocker Shaft Supports Blue anodized, extruded aluminum Rocker Shaft Supports for 426 Hemi®. Complete engine set includes 10 pieces plus hardware. P5249505 Rocker Shaft Supports C. Rocker Shaft End Plugs Rocker Shaft End Plugs are sold as a set of 4. They do not ﬁt aftermarket rocker shafts. P5249633 Rocker Shaft End Plugs (426 Hemi and Big Block) D. Rocker Shaft Springs Rocker Shaft Springs for use on all production-based Hemi valve gear. Used to locate rockers on the shaft. Includes 14 long springs and 2 short springs. Package contains 1 engine set. P4452827 Rocker Shaft Springs (426 Hemi) ROCKER ARMS AND HARDWARE E. Mechanical Rocker Arms These Rocker Arms are made of SAE 1041 forged steel. They feature hardened valve tip pads to help prevent scufﬁng. Can serve as a replacement for original production rockers. Fits both cast iron and aluminum heads. Sold individually. P4529705 Mechanical Rocker Arm Package- Production Ratio, Intake P4529706 Mechanical Rocker Arm Package- Production Ratio, Exhaust P4529707 Mechanical Rocker Arm Package- 1.7 Ratio, Exhaust P4529708 Mechanical Rocker Arm Package- 1.65 Ratio, Exhaust Note: High-Ratio rockers may require grinding on block and head for pushrod clearance. F. Stainless Steel Roller Tip Rocker Arms Rocker Arms are made from high-strength, investment grade cast stainless steel. Each features a roller tip to reduce friction and improve geometry. Designed for drag racing and high strength, they use standard Hemi rocker ratios. Sold individually. P5249603 Stainless Steel Roller Tip Rocker — Intake P5249604 Stainless Steel Roller Tip Rocker — Exhaust G. Rocker Arm Adjusting Screw and Nut Set Rocker Arm Adjusting Screw and Nut Set includes 8 screws and nuts. Note that 2 sets are required for V8 engines. P5007444AB Rocker Arm Screw/Nut Set (426 Hemi, Big Block, Small Block, 2.2L/2.5L, Slant Six, 3.9L V6)
INTAKE MANIFOLDS AND HARDWARE A. NEW! Dual Quad Intake- 8-bbl This new aluminum in-line Dual Quad Hemi® Intake Manifold is based on the marine version and is built from the original tooling! Machined to accept aftermarket AFB Carburetors or Holley Carburetors (P4452778 rear, P4452779 front), this manifold will ﬁt production 426 Hemi heads and has provisions for manifold heat and power brakes. It retains the stock height as the production 1966–71 Street Hemi AFB Intake Manifold. Production AFB air cleaner baseplate/lid will need to be changed or modiﬁed. Some O.E and aftermarket linkage components and fuel lines are needed to complete the installation. P4510633 Aluminum Dual Quad Intake — Dual 4-bbl Carbs (426 Hemi) Note: Will not accept original equipment AFB carburetors. B. Dual Plane Intake- 4-bbl* This revised 4-bbl aluminum Dual Plane Intake Manifold features a rectangle port and ﬁts all Hemi 426/472/528 engines. Now with stock exhaust heat located on rear of manifold, just like the original dual 4-bbl production in-line manifold. P4876188 Aluminum Dual Plane Intake — 4-bbl Carb (426, 472, 528 Hemi) C. Cross Ram Intake- 8-bbl* This aluminum Cross Ram Intake Manifold features rectangle ports and is designed for (2) 4-bbl carburetors. Offers signiﬁcant performance increase over the production Cross Ram Manifolds due to increased runner volume and plenum area. Uses Holley Carburetors (P4452778 and P4452779). *P5007534 Aluminum Cross Ram Intake — Dual 4-bbl Carbs (426, 472, 528 Hemi)

	A. Intake Manifold Gasket Sets Custom-ﬁt Intake Gasket Sets come complete to service one engine (includes gaskets, end seals, o-rings and distributor seal where applicable). P4120087 Intake Manifold Gasket Set- 0.060" Thick (426 Hemi® D4-D6 and Mullen Ported) P4120086 Intake Manifold Gasket Set- 0.060" Thick (426 Hemi Except D4-D6) P4529534 Intake Manifold Gasket Set- 0.090" Thick (426 Hemi Except D4-D6) B. Intake Manifold Heat Shield Original equipment Heat Shield for all 426 Street Hemi Intake Manifolds. Bolts to the bottom of the Intake Manifold to prevent hot engine oil from heating the manifold and robbing horsepower. Also ﬁts Aluminum Dual Plane Intake Manifold (P4876188). P4529431 Intake Manifold Heat Shield (426 Hemi) C. Intake Manifold Screw Set Set of 16 Allen screws and washers to attach the race Hemi Cross Ram Manifold. P4529330 A-990 Cross Ram Intake Manifold Screw Set (426 Hemi) D. Intake Manifold Plug Package Intake Manifold Plug Package consists of 8 manifold plugs. Used in Max Wedge and Hemi Cross Ram Intake Manifolds. P5249926 Cross Ram Intake Manifold Plug Package (426 Hemi and Max Wedge) CARBURETORS E. Cross Ram Holley Carburetors Holley Carburetors were the “go fast” choice for the legendary Super Stock 426 Hemi engine. Mopar Performance brings back these original equipment Holley Carbs for 1964, 1965 and 1968 race Hemis. These are exact reissues of the original carburetors. P4452778 Cross Ram Carburetor- Right Hand (1964–65, 1968 Race 426 Hemi) P4452779 Cross Ram Carburetor- Left Hand (1964–65, 1968 Race 426 Hemi) F. Air Horns These Air Horns are for use with Holley Hemi Cross Ram Carburetors. Perfect for Super Stock competition or restoration. Sold as a pair, includes front and rear. P5007809 Air Horns (426 Hemi) G. NEW! Cross Ram Linkage* This Cross Ram Linkage is for use with Hemi Cross Ram Intake Manifold (P5007534) and Holly carburetors (P4452778 and P4452779). P4510635 Cross Ram Linkage (426 Hemi)
OILING COMPONENTS A. Oil Pans Oil Pans contain a factory engineered and approved oil pan, drain plug and washer. Center sump style is used on passenger car applications. Windage Trays may be used if desired. P5007816 NEW! Oil Pan- 8-Quart, Center Sump (426 Hemi® and Big Block) P4529884 Oil Pan- 6-Quart, Center Sump (1970–71 426 Hemi E-Body) B. Windage Trays Windage Trays are designed to provide improved engine lubrication by reducing the interior windage at higher engine speed. Packages include tray and two pan gaskets. P4120998 Windage Tray- 3.75" Stroke (426 Hemi and Big Block) P5007345 Windage Tray- 4.15" Stroke (426 Hemi and Big Block) C. Oil Pan Gaskets Note that two are required for Windage Tray applications. P4452099 Race Oil Pan Gasket- Set of 2 (426 Hemi and Big Block) P3412049 Oil Pan Gasket- Sold Individually (426 Hemi and Big Block) D. Oil Pan Bolt Set P4120613 Oil Pan Bolt Set (426 Hemi, Big Block, Small Block) E. Oil Pickup and Screen Assemblies Factory original reissued Hemi Oil Pickup and Screen Assemblies. P5007818 NEW! Oil Pickup and Screen Assembly- 8-Quart, 1/2" Pipe, for Pan P5007816 (426 Hemi, Big Block) P4529566 Oil Pickup and Screen Assembly- 5-Quart,1/2" Pipe (1966–69 426 Hemi) P4529567 Oil Pickup and Screen Assembly- 6-Quart,1/2" Pipe, for Pan P4529884 (1970–71 426 Hemi) P5249818 Oil Pickup and Screen Assembly- 6-Quart,1/2" Pipe, Siamese Bore, not Raised Cam (426 Hemi, “RB”) F. Oil Pressure Relief Spring Oil Pressure Relief Spring increases engine oil pressure over stock spring for high-performance applications. Delivers up to 70 lbs. of oil pressure. Includes a cap and instructions. P4286571 Oil Pressure Relief Spring Set (426 Hemi, Big Block, Slant Six) G. Oil Pump Assembly This high-performance, high-output Oil Pump Assembly provides a 25% increase in oil volume. Ideal in high-performance applications. *P4286590 Oil Pump Assembly (426 Hemi and Big Block)
	A. Distributor Drive Gear Assemblies Distributor/Oil Pump Driveshaft Gear Assemblies feature a hardened tip shaft with full radius blend from hex to round and pinned gears. P3412064 Distributor Drive Gear — Flat Tappet Cams, Milodon Oil System (426 Hemi® and Big Block) P3571071 Distributor Drive Gear- Flat Tappet Cams (426 Hemi and Big Block) P3690875 Distributor Drive Gear- Roller Tappet, Aluminum-Bronze Gear (426 Hemi and Big Block) P3690876 Distributor Drive Gear- Roller Tappet, Aluminum-Bronze Gear, Milodon System (426 Hemi, Big Block) B. Tube and Peen Tool Package Tube and Peen Tool Package block off oil to right-side tappet bores. Required for race engines with high-lift roller cams. P4452812 Tube and Peen Tool Package (426 Hemi and Big Block) C. High-Performance Oil Filter P4452890 High-Performance Oil Filter — Black Finish (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) D. Race Oil Filter* High-performance, heavy-duty Race Oil Filter has a thicker canister with high burst strength. P4529190 Race Oil Filter — Black Finish (426 Hemi, Big Block, Small Block) E. Restoration Oil Filters Mopar Performance has reissued these service replacement oil ﬁlters, used in the 1960s and 1970s. The high-performance white ﬁlter (P4529805) was recommended for use in competition from 1965–74. P4529187 Restoration Oil Filter (426 Hemi, Big Block, Small Block) P4529805 High-Performance Restoration Oil Filter (426 Hemi, Big Block, Small Block) Note: These ﬁlters may not ﬁt some V8 applications (those after 1972 requiring short ﬁlters). F. Oil Pump Priming Shaft Special hardened steel priming shaft ﬁts on any 3/8" or larger drill. Insert shaft into hole where distributor ﬁts. Pressurizes oil galleys to ensure against dry starts and ruining your engine. P4286800 Oil Pump Priming Shaft (V8) COOLING COMPONENTS G. Lightweight Aluminum Water Pump Lightweight Aluminum Water Pump features the same dimensions as stock, and an 8 Blade Impeller. P5007643AB Lightweight Aluminum Water Pump (426 Hemi and Big Block) H. Aluminum Water Pump Housing P4286900 Aluminum Water Pump Housing (1968–78 426 Hemi and Big Block) P2206445 Bracket for Alternator (426 Hemi and Big Block)
A. Water Pump Installation Kit Kit includes water pump gasket, pump housing gasket, plugs, water pump screws, and long and short housing screws. P5007449 Water Pump Installation Kit (426 Hemi® and Big Block) B. Chrome Water Pump and Housing Bolts Chrome dress-up projects are incomplete without chrome bolts. P5007621 Water Pump and Housing Bolts (426 Hemi and Big Block) C. Front Cover Gasket and Seal P4876280 Front Cover Seal (426 Hemi, Big Block, Small Block) P4876769 Front Cover Gasket (426 Hemi and Big Block) D. 90° Water Neck Outlet Cast aluminum 90° Water Neck Outlet provides greater ﬂexibility in routing cooling system hoses and improves the appearance of the engine compartment. It features 3-direction capability, which is ideal for compact engine compartments. P5249191 90° Water Neck Outlet (426 Hemi, Big Block, Small Block, Slant Six, 3.9L V6) E. Chrome Water Neck This high-quality Chrome Water Neck is made of heavy-duty material. Includes gasket and 2 chrome bolts. P4286759 Chrome Water Neck (to 1978 426 Hemi, Big Block, Small Block) F. Viscous Fan Package Most late 1960s and early 1970s factory-built muscle cars were equipped with viscous fans for cooling purposes. The package provides thermostatically controlled cooling, includes a lightweight balanced fan, and takes the least amount of horsepower from the engine. Offers up to 15 horsepower gain on typical high-performance V8s. P4120758 Viscous Fan Package (426 Hemi, Big Block, Small Block) G. NEW! Radiator Cooling Fan Shrouds These Restoration Radiator Cooling Fan Shrouds measure 26.00". P2785434 Restoration Radiator Cooling Fan Shroud (1967–69 426 Hemi, 383/440 Big Block B-Body) P2998326 Restoration Radiator Cooling Fan Shroud (1970–73 426 Hemi, 383/440 Big Block B- and E-Body) H. Thermostat This heavy-duty thermostat can handle increased heat management duties in high-performance engines. Comes with replacement gasket. *P4876307 180° Thermostat (to 1978 426 Hemi, Big Block, Small Block, Slant Six)