Mopar Performance - Big Block


OLD SCHOOL There’s No Replacement for Displacement. Old school performance enthusiasts know what works, and what doesn’t. When it comes to pure power and performance, Big Blocks are the only way to go. With authentic Mopar Performance parts (along with a few tricks learned along the way), you’ll show ‘em who’s still the top dog in the schoolyard. And if they’re nice, you might even let ‘em keep their lunch money! There’s No Replacement for Displacement. Old school performance enthusiasts know what works, and what doesn’t. When it comes to pure power and performance, Big Blocks are the only way to go. With authentic Mopar Performance parts (along with a few tricks learned along the way), you’ll show ‘em who’s still the top dog in the schoolyard. And if they’re nice, you might even let'em keep their lunch money!	CAST IRON BIG BLOCKS • 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 siamesed 440 blocks • Stock 10.72" deck height allows for standard components • Machined to accept all standard production pieces A. Cast Iron Siamesed-Bore Blocks These blocks can be bored to the stock size of 4.25", but are speciﬁcally designed to be bored larger. Mopar recommends that you sonic check each block if you approach or exceed the 4.50" bore diameters. P5007625AB 440 Big Block Cast Iron Siamesed Cross-Bolt Block- Rough Bored at 4.50" P5007626AB 440 Big Block Cast Iron Siamesed Cross-Bolt Block- Raised Cam, Rough Bored at 4.498" P5007624AB 440 Big Block Cast Iron Siamesed Cross-Bolt Block- Rough Bored at 4.19" Note: P5007626AB Requires special UGL cam P5007714, special oil pickup, and intermediate shaft modiﬁcations. Higher cam location allows (0.250" higher) longer stroke for more cubic inch displacement up to 4.50" stroke. Some clearancing of the pan rail and other areas will be required. Cast Iron Wedge Blocks (not pictured) Wedge Blocks feature factory-size bores, water ﬂow between the cylinders (not siamesed) for improved cooling and sealing durability. These blocks are fully water-jacketed. P5007671AB 426 Max Wedge Cast Iron Block- 2-Bolt Mains, Finish Bored at 4.25" *P5007815AB NEW! 440 Wedge Cast Iron Block- 2- Bolt Mains, Finish Bored at 4.32"
ENGINE BLOCK COMPONENTS B. Rear Main Bearing Seal Retainer Kit Kit contains rear main seal retainer, bolts and seal package. P4529732 Rear Main Bearing Seal Retainer Kit (426 Hemi® and Big Block) C. Oil Seal Package Oil Seal Package includes crank seals and installation tool. P4271961 Oil Seal Package (426 Hemi and Big Block) D. Freeze Plugs 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. 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 and Big Block)

	A. Engine Teardown Gasket Sets Engine Teardown Gasket Sets include all gaskets needed for complete Big Block engine teardown. Includes oil pan, cylinder head, valve cover, chain case cover, intake manifold and oil pump gaskets. P3690850 Engine Teardown Gasket Set (383/400 Big Block) P3690175 Engine Teardown Gasket Set (426W/440 Big Block) P4452112 Race Engine Teardown Gasket Set (383/400 Big Block) P4452113 Race Engine Teardown Gasket Set (426W/440 Big Block) CRANKSHAFTS AND ACCESSORIES B. Forged Race Crankshafts These high-strength, high-quality Forged Steel Cranks are machined from 4340 steel. For high-performance race applications. Eight-bolt ﬂange for Hemi® and “RB“ engines. P5007250 Forged Race Crankshaft- 4.15" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi, Wedge,"RB“) P5007251 Forged Race Crankshaft- 3.75" Stroke, Full Radius, 8-Bolt, Balanced (426 Hemi, Wedge,"RB“) C. 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) D. Crank Bolt Packages These Crank Bolts are used to attach the damper to the crank. 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 A. Steel Vibration Damper These Steel Vibration Dampers feature a steel ring and a universal 6-bolt front pulley mount pattern. SFI approved. P5249694 Steel Vibration Damper (440 Forged Crank, 1962–70 361/383 "B“ Forged Crank, 413/426 Wedge) B. 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) C. Damper Degree Timing Tape Improve timing accuracy with this Damper Degree Timing Tape. 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. D. 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) PUSHRODS E. Pushrod Kits Engineered to be installed in your engine rebuilding project. These 3/8" diameter Pushrods are sold as complete engine sets or individually for service. P4529557 Hydraulic Pushrods- 8.57" Length, Set of 16 (“B“ Engines) P4529559 Hydraulic Pushrods- 9.31" Length, Set of 16 (“RB” Engines) P4529545 Hydraulic Pushrod- 9.31" Length, Sold Individually ("RB“ Engines) P4529560 Mechanical Pushrods- 9.20" Length, Ball and Cup Style, Set of 16 (“RB“ Engines) P4529546 Mechanical Pushrod- 9.20" Length, Ball and Cup Style, Sold Individually (“RB“ Engines) F. Mechanical/Hydraulic Pushrods (Not Pictured) Special Pushrods to use with adjustable rocker arms and hydraulic tappet cams. P4876392 Mechanical/Hydraulic Pushrods- Set of 16 (“RB“ Engines) P4876391 Mechanical/Hydraulic Pushrod- Sold Individually (“RB“ Engines)
	ROLLER TIMING CHAIN AND SPROCKETS A. All-Out Race Chain and Sprockets Matched sprockets and double roller chain for all-out race applications. Has 3 matched keyways on crank sprocket to adjust cam timing. Kit includes magna-ﬂuxed sprockets and roller timing chains. P4452815 All-Out Race Chain and Sprockets- 3-Bolt, Standard Size (426 Hemi and Big Block) B. Double Roller Chains and Sprockets* High-strength Double Roller Chains provide added durability and decreased rotational friction versus the production silent chains. Kit includes magna-ﬂuxed sprockets and roller timing chain. Has 3 machined keyways in crank sprocket to adjust cam timing. P5249268 Double Roller Chain and Sprockets- 1-Bolt Mount P5249269 Double Roller Chain and Sprockets- 3-Bolt Mount (426 Hemi, Big Block) C. Chrome-Plated Front Timing Chain Cover Chrome-Plated Front Timing Chain Cover package includes cover, seal and gasket. P4349816 Chrome-Plated Front Timing Chain Cover (1968–91 426 Hemi and Big Block) D. 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) E. Front Cover Gasket and Seal P4876280 Front Cover Seal (426 Hemi, Big Block, Small Block) P4876769 Front Cover Gasket (426 Hemi and Big Block)

CAMSHAFTS AND LIFTERS A. Purple Shaft Camshafts Mopar Performance cams are designed and engineered exclusively for your engine. A wide range of proﬁles is available from mild to wild and bracket to all-out racing. 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, tappets and instruction sheet. P4452783 Hydraulic Camshaft P4529270 Hydraulic Camshaft P4286675 Hydraulic Camshaft P4286677 Hydraulic Camshaft P4452993 Hydraulic Camshaft P4120235 Hydraulic Camshaft P5007697 Hydraulic Camshaft P4120237 Hydraulic Camshaft P5007698 Hydraulic Camshaft P4529318 Hydraulic Camshaft P4120659 Mechanical Camshaft P4120661 Mechanical Camshaft P4120663 Mechanical Camshaft P4349268 Mechanical Camshaft B. Camshaft Bearings Complete engine set of Camshaft Bearings. P5249711 Camshaft Bearings- Babbit Applications (426 Hemi® and Big Block) C. Camshaft Sprocket Attaching Hardware 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) 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. Tappets* 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)
CYLINDER HEAD FLOW CHART
	CYLINDER HEADS, GASKETS AND HARDWARE A. CNC-Ported Stage VI Aluminum Cylinder Heads These unique CNC-ported Stage VI Cylinder Heads feature special machining for longer valves, allowing for a deeper port in the critical short turn area. Port proﬁles developed by Chapman Racing, these exclusive heads feature state of the art design for maximum ﬂow over the entire lift curve. It is available in two versions: standard port window with a 260 cc intake port or Max Wedge with a 285 cc intake port. Both set the standard in Big Block ﬂow efﬁciency for their respective port size. The Max Wedge port version out-powered competitive heads of all manufacturers in Popular Hot Rodding Magazine's National Engine Masters Challenge Dyno Competition. P4876383 CNC-Ported Stage Aluminum VI Cylinder Head- 2.18" Intake and 1.81" Exhaust P4876386 NEW! CNC-Ported Stage Aluminum VI Cylinder Head- 2.25" Intake and 1.81" Exhaust (Max Wedge) Note: P45876383 requires the use of Rocker Shaft Stands (P5007742) and 5.40" length / 11/32" diameter valves. B. Aluminum 383/440 Cylinder Head This lightweight Big Block Cylinder Head (approx. 25 lbs.) uses stock valves and valve gear including rocker arms. Head outﬂows the original “906" head on intake and exhaust sides and features an increase of 40 horsepower over stock (cast iron) 383/440 heads. It is designed with a smaller chamber than open chamber CI 383/440 heads. Head uses stock intake manifolds without adapter. P4876311 Aluminum Cylinder Head — 2.14" Intake and 1.81" Exhaust (383/440 Big Block) C. Stage VI Aluminum Big Port Cylinder Heads* Designed and developed by Mopar Performance, these Stage VI Aluminum Big Port Cylinder Heads are made from high-strength aluminum and are designed to be completely interchangeable with the stock Big Block cylinder heads. These high-strength, lightweight (40 lbs. lighter per engine set) aluminum heads feature larger intake ports that are rectangular and raised for increased output- 210 cc, raised exhaust ports while maintaining stock header pattern, and a "closed“ combustion chamber of 78 cc with thick 0.450" deck that permits milling. These bare machine heads use stock valve gear and include seats and bronze 3/8" guides. All aluminum heads are quality checked for pressure and hardness. P4529335 Stage VI Aluminum Cylinder Head- 2.14" Intake and 1.81" Exhaust P5249579 Stage VI Aluminum Cylinder Head- 2.14" Intake and 1.81" Exhaust Note: Aluminum Max Wedge heads require offset intake rockers. P5249579 features small closed chamber and relocated spark plug. D. Max Wedge Cast Iron Cylinder Heads These Max Wedge Cast Iron Cylinder Heads feature a large port window for increased airﬂow, and a short side radius on exhaust port for added ﬂow. Designed to replace 1962–64 Max Wedge heads. Uses closed combustion chamber, 6-bolt valve covers and cast-in pedestals. P5007494 Cast Iron Stage III Cylinder Head- 2.08" Intake, 1.88" Exhaust (1962–64 Max Wedge) P5249824 Cast Iron Stage III Cylinder Head- 2.14" Intake and 1.81" Exhaust (1962–64 Max Wedge)
A. Stage V Wedge Cast Iron Cylinder Heads Developed by Mopar Performance, this Stage V Cylinder Head is designed to be interchangeable with the stock Big Block Cylinder Heads. They feature heat crossover for improved drivability. Head uses standard Big Block valve gear, gaskets and valve covers, and out-ﬂow "906“ heads on intake and exhaust (stock and mildly modiﬁed). Same open combustion chamber as 1968–78 production heads. Head uses 6-bolt valve cover; rocker shaft pedestals cast-in. Uses offset intake rockers. *P4529993 Stage V Cast Iron Cylinder Head — 2.14" Intake and 1.81" Exhaust (Wedge)
A. Composition Material Cylinder Head Gaskets Thick, 0.040" to 0.042" unless otherwise noted, Big Block Composition Cylinder Head Gaskets can be used for replacement or competition applications up to 12.5:1 compression ratio. Sold as an engine set. P4529455 Composition Material Cylinder Head Gaskets- Up to 4.420" Bore, 0.038" Thick P4349559 Composition Material Cylinder Head Gasket- Up to 4.380" Bore P4876070 Composition Material Cylinder Head Gaskets- Over 4.380" Bore B. Steel Shim Cylinder Head Gasket Set Steel Shim Cylinder Head Gasket Set features 0.020" compression thickness. Sold as an engine set. P4286754 Steel Shim Cylinder Head Gasket Set (Big Block) C. Head Bolt Set Head Bolt Set includes all head bolts and washers as required. P4120472 Cylinder Head Bolt Set D. 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) E. Porting Templates These die cut clear templates allow you to port a set of heads to increase intake and exhaust ﬂow. Designed to increase torque and horsepower. P4120437 Porting Template — 2.08/1.74 Valve Size, Cast Iron Head (Big Block Production Heads) VALVE COVERS AND HARDWARE* F. “As Cast“ Aluminum Valve Cover Set These cast aluminum valve covers are sold "as cast,“ so you can set up the breathers the way you want them. There’s no paint to remove if welding is done. Mopar Performance Pentastar logos are cast into each cover. Cast aluminum covers are more rigid than stamped valve covers and help prevent valve cover leaks. Set includes 2 valve covers and oil ﬁller caps. P5007615 "As Cast“ Aluminum Valve Cover Set P4452091 Race Gaskets — Rubber Reinforced Cork (Set of 2) G. Black Wrinkle Cast Aluminum Valve Cover Set These high-strength valve covers are more rigid than standard aluminum covers, offering better anti-leak properties. Set includes 2valve covers, bafﬂe package and 2 oil ﬁller caps. P5007614 Black Wrinkle Cast Aluminum Valve Cover Set P4452091 Race Gaskets — Rubber Reinforced Cork (Set of 2)
	A. Chrome Valve Cover Set Dress up your Big Block engine compartment with this Chrome Valve Cover Set. Includes valve covers and grommets. Quality chrome plating. Stamped steel with Mopar Pentastar logo. P5007448 Chrome Valve Cover Set P4452091 Race Gaskets — Rubber Reinforced Cork (Set of 2) P4120101 Valve Cover Gaskets — Production Material (Set of 2) B. Polished Cast Aluminum Valve Cover Set These Big Block Polished Cast Aluminum Valve Covers are perfect for that show car engine look. They feature the Mopar Performance Pentastar logo and are polished to a chrome-like shine. Set includes 2 valve covers and 2 oil ﬁller caps (does not include bafﬂing). P5007616 Polished Cast Aluminum Valve Cover Set P4452091 Race Gaskets — Rubber Reinforced Cork (Set of 2) C. Stamped Aluminum Valve Cover Set Lightweight, blue anodized aluminum Big Block valve covers are distinctive in any engine compartment. Mopar Pentastar logo is imprinted in each cover. Set includes one pair of covers with grommets (does not include bafﬂing). P4529199 Stamped Aluminum Valve Cover Set P4120101 Valve Cover Gaskets — Production Material (Set of 2) P4452091 Race Gaskets — Rubber Reinforced Cork (Set of 2) D. Valve Cover Accessory Set For Stamped Steel Valve Covers only. Valve Cover Accessory Set includes 12 chrome-plated screw and washer assemblies, 1 chromeplated oil ﬁlter cap, 2 rubber grommets. Grommet Set and Bolt and Washer Set can also be purchased individually. P4120272 Valve Cover Accessory Set (Big Block and Small Block) P4349620 Chrome Hold-Down Bolt and Washer Set P5007419 Chrome Valve Cover Grommet Set (Big Block and Small Block) E. Bafﬂe and Screw Package For cast aluminum valve covers only. P5007052 Bafﬂe and Screw Package (Big Block, Small Block, Dodge Truck Magnum/Jeep® Engines)
A. Valve Cover Retaining Screw Set Valve Cover Retaining Screw Set includes 12 screws. For Cast Aluminum Valve Covers only. P5007053 Valve Cover Retaining Screw Set (Big Block and Small Block) B. Valve Cover Bolt Kit Valve Cover Bolt Kit includes 12 chrome-plated screws for stamped steel and aluminum valve covers. Not for use with Magnum engines. P5007458 Valve Cover Bolt Kit (Big Block and Small Block) C. Cast Aluminum Valve Cover Grommet Set Set of grommets to service cast aluminum valve covers. Set includes 1 grommet for PVC and 1 that can be used for plug or opened for breather. P5007921 Die Cast Valve Cover Grommet Set (Big Block and Small Block) D. Chrome Breather Caps Use to ﬁll extra valve cover holes in cast aluminum valve covers. Push-In Style Breather Cap requires the use of Grommet Set (P4529882). P4529880 Twist-On Bottom Vented Breather Cap (Big Block, Small Block, 5.2L/5.9L Truck Magnum/ Jeep® Engines) P4529881 Push-In Style Breather Cap (Big Block, Small Block, 5.2L/5.9L Truck Magnum/Jeep Engines) P4529882 Rubber Grommet- for Breather Cap P4529881 VALVES AND VALVE HARDWARE* E. Valves These stainless valves for your Big Block engine have swirl-polished underheads that have no ﬂat or ski jump areas. They feature a 3/8" stem diameter and 1 square groove. P5249199 Intake Valve- 2.08" Diameter, 4.86" Stem Length P5249200 Intake Valve- 2.14" Diameter, 4.86" Stem Length P5249866 Intake Valve- 2.18" Diameter, 4.86" Stem Length P5249201 Exhaust Valve- 1.74" Diameter, 4.87" Stem Length P5249202 Exhaust Valve- 1.81" Diameter, 4.87" Stem Length P4876398 Exhaust Valve- 1.88" Diameter, 4.87" Stem Length F. 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 as a set of 16. P4120492 Valve Seals — 3/8" Stem Size, (Big Block and Small Block) G. 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)
A. Valve Keepers (Locks) These single groove style Big Block Valve Keepers are made from hardened material. They feature a 3/8" stem diameter and can be used for restoration or performance applications. Sold as cylinder head sets of 16 pieces (note that 2 sets are required for all V8 engines). P4120618 Valve Keepers (Big Block, Small Block, Slant Six, 3.9L V6) P4286612 Valve Keepers (Big Block, Small Block, Slant Six, 3.9L V6) B. 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. 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: Please refer to the reference chart Above for proper application.
A. Valve Spring Retainers Valve Spring Retainers for Big Block engines are available in two levels of performance: Chrome Moly for heavy-duty applications and Titanium for top-level race performance. Sold individually. P4007178 Titanium Valve Spring Retainer (Big Block, Small Block, Slant Six, 3.9L V6) 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) P4452033 Chrome Moly Valve Spring Retainer (Big Block, Small Block, Slant Six, 3.9L V6)
	B. 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. P5249672 Valve Guide — 3/8" Valve Stem, Intake and Exhaust (Big Block Stage VI) ROCKER SHAFTS, SUPPORTS AND HARDWARE C. Rocker Shafts P4529101 Rocker Shaft- Hydraulic Valve Gear, On-Center (Sold Individually) P5249092 Rocker Shafts- Aluminum Roller Valve Gear, On-Center, Chromed (Set of 2) D. 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) E. Rocker Shaft Hold-Down Billet Aluminum Rocker Shaft Hold-Down provides greater rocker shaft stiffness. Helps Rocker Shaft maintain roundness with attaching torque. Roundness is important with mechanical rockers and high spring loads. Anodized blue. P5249714 Rocker Shaft Hold-Down F. Rocker Shaft Retainers and Bolts Each kit contains previously hard-to-ﬁ nd hold down retainers and bolts necessary to secure both rocker shafts. These retainers are manufactured to Mopar Performance O.E. specs to assure high quality. For use on all cylinder heads with cast-in rocker stands. P4529744 Rocker Shaft Retainers and Bolts
A. Rocker Shaft Stands These heavy-duty billet aluminum CNC machined Rocker Shaft Stands use standard rocker shafts and rocker arms. P5007742 Rocker Shaft Stand (Stage VI CNC Ported Heads P4876383) B. Rocker Shaft Springs* Rocker Shaft Springs for use with Big Block mechanical rocker arms. Use to separate and locate rocker arms on shaft. Package includes 1 engine set (8 springs). P4452801 Rocker Shaft Springs ROCKER ARMS AND HARDWARE C. Hydraulic Rocker Arm Packages These heavy-duty Hydraulic Rocker Arm Packages feature thicker cross-sectional material in pushrod socket area for added durability, similar to the O.E. 440 Six Pack style. Complete package includes 16 heavy-duty hydraulic rocker arms, rocker shaft retainers and holddown bolts. Rocker shafts not included. Individual service rocker arms are also available. P4529743 Hydraulic Rocker Arm Package- 1.5 Ratio P4529476 Service Hydraulic Rocker- 1.5 Ratio, Right, Sold Individually P4529477 Service Hydraulic Rocker- 1.5 Ratio, Left, Sold Individually Note: For the 383/400 ”B“ and 413/440 ”RB“ engines, the left rocker socket is approximately 1/16" to the right, and the right rocker socket is approximately 1/16" to the left. High-Ratio rockers may require grinding on block and head for clearance. D. Cast Iron/Ductile Mechanical Rocker Arm* Packages These Cast Iron/Ductile Mechanical Rocker Arm Packages include 16 rocker arms, 8 separator springs (includes Max Wedge), adjusting screws and lock nuts. They feature mechanical lash adjustment with lock-nut and high-strength cast iron/ductile iron rocker arms. Required with Mechanical Camshafts, can be used with Hydraulic Camshafts. Rocker shafts not included. Individually sold service rockers are also available. P4120974 Cast Iron Ductile Mechanical Rocker Arm Package- 1.5 Ratio P5249797 Service Cast-Iron Ductile Rocker- 1.6 Ratio, Left, Sold Individually P5249798 Service Cast-Iron Ductile Rocker- 1.6 Ratio, Right, Sold Individually Note: High-Ratio rockers may require grinding on block and head for clearance. E. 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! Cross Ram Intake — Dual 4-bbl Max Wedge After 40 years, Mopar Performance is pleased to bring back the Cross Ram Max Wedge Intake! This brand-new design improves airﬂow by as much as 20% by improved runner volume and plenum area and is fully interchangeable on all Max Wedge applications. It is based on the 1964 Max Wedge intake and uses production AFB carburetors. Designed for use with RB application with Max Wedge heads. P5007330 Aluminum Cross Ram Intake — Dual 4-bbl Carbs (Max Wedge and "RB“ Engines) B. Race Aluminum Single Plane Intakes 4-bbl P4876127 Race Aluminum Single Plane Intake 4500 Carb (“RB” with Stage VI Heads) P4876128 Race Aluminum Single Plane Intake 4-bbl Carb (Max Wedge with Prod. or Stage VI Heads, “RB”) P4876129 Race Aluminum Single Plane Intake 4500 Carb (Max Wedge with Prod. or Stage VI Heads, “RB”) P5249358 Race Aluminum Single Plane Intake 4-bbl (“RB” Engines with Stage VI Heads) C. Aluminum Dual Plane Intakes — 4-bbl* For bracket, Super Stock, or general high performance, these dual plane intake manifolds are designed for use with standard cylinder heads, bolt-on with no modiﬁcations necessary, and accept standard ﬂange Holley carburetors. Manifolds are similar to the production, but they have larger cross-sectional area runners for increased power. Heat crossovers make them ideal for dual purpose applications. P4529117 Aluminum Dual Plane Intake — 4-bbl Carb (Production 361/383/400 with Stage IV/V/Production Heads) P4529118 Aluminum Dual Plane Intake — 4-bbl Carb (Production 413/426W/440 with Stage IV/V/ Production Heads) D. Aluminum Dual Plane Intakes — Six Pack P4529055 Aluminum Dual Plane Intake — Six Pack (Prod. 361/383/400 Engines with Stage IV/ V/Prod. Heads) P4529056 Aluminum Dual Plane Intake — Six Pack (Production 413/426W/440 with Stage IV/V/Production Heads) E. Aluminum Single Plane Intakes — 4-bbl These lightweight aluminum single plane intake manifolds are engineered for use with standard cylinder heads and require no attaching modiﬁcations. Perfect for bracket, Super Stock, or general high-performance applications. These intake manifolds offer a 5–10 horsepower advantage over other single plane manifolds. Carburetor ﬂange accepts standard Holley single 4-bbl carburetors. P4529462 Aluminum Single Plane Intake — 4-bbl Carb (Production 361/383/400 with Stage IV/V/ Production Heads) P4529463 Aluminum Single Plane Intake — 4-bbl Carb (Prod. 413/426 W/440 with Stage IV/V/ Prod. Heads) P4529724 Aluminum Single Plane Intake — 4500 Carb (Production 361/383/400 with Stage IV/V/ Production Heads) P4529725 Aluminum Single Plane Intake — 4500 Carb (Production 413/426W/440 with Stage IV/V/Production Heads)

A. Intake Manifold Gasket Sets Custom-ﬁt intake gaskets for use with Mopar Performance Big Block cylinder heads. Sold in pairs (includes gaskets, end seals, o-rings and distributor seal where applicable). P5249433 Intake Manifold Gasket Set- 0.030" Thick (Big Block with Stage VI Heads) P5249467 Intake Manifold Gasket Set- 0.045" Thick (Big Block with Stage VI Heads) P5249468 Intake Manifold Gasket Set- 0.060" Thick (Big Block with Stage VI Heads) P5249483 Intake Manifold Gasket Set- 0.030" Thick (Max Wedge with Stage VI Heads) P5249484 Intake Manifold Gasket Set- 0.045" Thick (Max Wedge with Stage VI Heads) P5249485 Intake Manifold Gasket Set- 0.060" Thick (Max Wedge with Stage VI Heads) B. Intake Manifold Service Gaskets Gaskets required to service Mopar Performance intake manifolds. P5007334 Cross Ram Intake Manifold Service Gaskets C. Composite Intake Manifold Gasket Set Special composite material intake gaskets for large port Max Wedge heads originally built in 1962–64 as 413/426 engines. These gaskets offer advantages in reliability and shape, allowing for more port modiﬁcations. Package includes 2 gaskets and 2 end seals. P5249643 Composite Intake Manifold Gasket Set (Max Wedge) D. Intake Manifold Gasket Heat Block-Off These stainless steel Intake Manifold Gasket Heat Block-Offs keep exhaust heat from transferring to the Intake Manifold for a cooler, denser fuel-air mixture. P4286825 Intake Gasket Heat Block-Off ("B“ Engines) P4286826 Intake Gasket Heat Block-Off ("RB“ Engines) P4452103 Race Intake Manifold Gaskets (Production 361/383/400 with Stage IV/V/Production Heads) P4452105 Race Intake Manifold Gaskets (Production 413/426W/440 with Stage IV/V/ Production Heads)
	A. Intake Manifold Gasket Reinforcement Bars Hard-to-ﬁnd “B“ and “RB“ engine Intake Manifold Gasket Reinforcement Bars hold down the intake manifold gasket at the front and back of the block. Sold in pairs. P5249492 Intake Manifold Gasket Reinforcement Bars (“B“ Engines) P5249493 Intake Manifold Gasket Reinforcement Bars (“RB“ Engines) B. 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) C. Intake Manifold Spacers These are the correct Intake Manifold Spacers to use with Mopar Performance Stage VI aluminum heads on “RB” (440) blocks. Can also be used to mate a “B”manifold to Stage VI heads on a “B” block. Unique design allows the standard 440 intake gasket/valley tray to be used as a valley cover with a simple modiﬁcation and paper gaskets. Package contains 2 cast aluminum manifold spacers. P5249189 Intake Manifold Spacers (440 Big Block with Stage VI Heads) D. Choke Seal This Choke Seal is for dual plane production and aluminum intake manifolds. Package includes the choke cup, gasket and 2 screws. Does not include a choke. P5249639 Choke Seal (Big Block, Small Block) E. Intake Manifold Attaching Bolts Complete package of 16 bolts required to attach the intake manifold to the cylinder heads. Bolts measure 3/8" diameter x 1 3/4" length. P4876770 Intake Manifold Attaching Bolts (383/440 Big Block) OILING COMPONENTS F. Chrome Dipstick and Tube P4349629 Chrome Dipstick and Tube (Big Block) G. 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, while the rear sump style is used for pickups. Windage trays may be used if desired. P5249064 Oil Pan- 6-Quart, Rear Sump P5007807AB Oil Pan- 6-Quart, Center Sump P5007816 NEW! Oil Pan- 8-Quart, Center Sump (426 Hemi and Big Block) Note: See the Oil Pickup and Screen Assemblies for speciﬁc application information. H. Oil Pan Bolt Set P4120613 Oil Pan Bolt Set (426 Hemi, Big Block, Small Block)
A. Oil Pan Gaskets Oil Pan Gaskets for Big Block/Hemi® applications. Note that 2 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) B. 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) C. Oil Pickup and Screen Assemblies Factory original reissued oil pickup and screen assemblies. Standard pickups are 3/8", while race styles require hole enlargement in stock blocks. P5007817 NEW! Oil Pickup and Screen Assembly- 8-Quart, 3/8" Pipe, for Pan P5007816 P5007818 NEW! Oil Pickup and Screen Assembly- 8-Quart, 1/2" Pipe, for Pan P5007816 (426 Hemi, Big Block) P5007848 NEW! Oil Pickup and Screen Assembly- 6-Quart, 3/8" Pipe, for Pan P5007807AB P4529565 Oil Pickup and Screen Assembly- 6-Quart, 3/8" Pipe (“RB“ Engines) P4529564 Oil Pickup and Screen Assembly- 6-Quart, 3/8" Pipe (“B“ Engines) P5249817 Oil Pickup and Screen Assembly- 6-Quart, 1/2" Pipe (“B“ Engines) P5249818 Oil Pickup and Screen Assembly- 6-Quart, 1/2" Pipe, Siamese Bore, not Raised Cam (426 Hemi, “RB“) Note: P4529564 does not ﬁt the 440 Six Pak. D. Valley Trays Valley Trays for use with Stage VI head to keep the engine oil in the tappet chamber and off the intake manifold. P4876847 Valley Tray (“B“ Engines, “RB“ Engines with Manifold Spacers and Stage VI Heads) P4876848 Valley Tray (“RB“ Engines) E. Windage Trays Windage Trays are designed to provide improved engine lubrication by reducing the interior windage at higher engine speed. Includes tray and 2 pan gaskets. P4120998 Windage Tray- 3.75" Stroke (426 Hemi and Big Block) P5007345 Windage Tray- 4.15" Stroke (426 Hemi and Big Block) F. Oil Pump Assembly This high-performance, high-output Big Block/Hemi oil pump assembly provides a 25% increase in oil volume. Ideal replacement for stock pump in high-performance applications. *P4286590 Oil Pump Assembly (426 Hemi and Big Block)
	A. Distributor/Oil Pump Driveshaft Gear Assemblies Distributor/Oil Pump Driveshaft Gear Assemblies feature 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. Cams, Aluminum-Bronze Gear (426 Hemi and Big Block) P3690876 Distributor Drive Gear — Roller Tappet. Cams, 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 High-Performance Oil Filter is engineered to meet the demands of heavy-duty and high-performance applications. Filter is black with Mopar Performance Pentastar logo. 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. Filter is black with Mopar Performance Pentastar logo. 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).
A. Oil Pump Priming Shaft Don't ﬁre up that engine without pre-lubing (priming) it thoroughly with oil. 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. Fits all V8 engines. P4286800 Oil Pump Priming Shaft (V8) COOLING COMPONENTS B. Aluminum Water Pump Lightweight Aluminum Water Pump is fully assembled and ready to install. Same dimensions as the stock cast iron version, except the housing is made of aluminum. It features an 8-blade Impeller. P5007643AB Aluminum Water Pump (426 Hemi® and Big Block) C. Aluminum Water Pump Housing Aluminum Water Pump Housing has bosses for both Hemi and Big Block engine applications (1968–78). P4286900 Aluminum Water Pump Housing (1968–78 426 Hemi® and Big Block) P2206445 Bracket for Alternator (426 Hemi and Big Block) D. Water Pump Installation Kit Water Pump Installation Kit includes water pump gasket, pump housing gasket, plugs, water pump screws, plus long and short housing screws. P5007449 Water Pump Installation Kit (426 Hemi and Big Block) E. Chrome Water Pump and Housing Bolts Engine chrome dress-up projects are incomplete without chrome bolts. P5007621 Chrome Water Pump and Housing Bolts (426 Hemi and Big Block)
	A. 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-directional capability, which is ideal for compact engine compartments. P5249191 90˚ Water Neck Outlet (426 Hemi® , Big Block, Small Block, Slant Six, 3.9L V6) B. 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) C. Thermostat This heavy-duty Thermostat can handle increased heat management duties in high-performance engines. Replacement gasket included. P4876307 180˚ Thermostat (to 1978 426 Hemi, Big Block, Small Block, Slant Six) D. Viscous Fan Package* Most late 1960s and early 1970s factory-built muscle cars were equipped with viscous fans for cooling purposes. Engineers have determined through dyno-testing that this viscous fan is the best replacement package. It 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) E. 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) EXHAUST F. Drag Race Exhaust Headers These Race Exhaust Headers are painted 18-gauge. TS(OD) = 1.70". CS (OD) = 3.00". *P4529436 Drag Race Exhaust Headers- Slip-On Collector Under Chassis Exit (Big Block B-and E-Bodies). Note: Column Shift must be modiﬁed on some models, converted to ﬂoor Shift or altered to ﬁt.