Mopar Performance


ENGINES, BLOCKS AND HARDWARE A. Midget Racing Engine This circle track race engine is designed for use in all midget series with a 166-cubic-inch limit. Dyno tested and factory sealed to ensure consistent output. This complete and dyno’d aluminum A4 engine includes injector stacks, fuel pump, ignition box and wires, all wires and harnesses, and a W9 cylinder head. Speciﬁcations: Horsepower: 350 horsepower at 7200 rpm Torque: 265 ft.-lbs. of torque at 6000 rpm Max. Recommended rpm: 8500 rpm Displacement: 162 c.i. Compression Ratio: 15:1 Crankshaft: Scat Cylinder Head: W9 Combustion Chamber Size: 38 cc Camshaft: Roller cam with 60 mm bearings Block: A4 aluminum Oil Pan: Aluminum Fuel: Methanol Maximum rpm: 9000 rpm P5007961 Midget Racing Engine Note: Sold ”As is“. The Mopar Performance 90-Day Crate Engine Limited Warranty does not apply. Horsepower and torque ratings based on test engine ratings may vary on individual engines. B. Aluminum Midget Race Blocks* Mopar Performance takes midget racing to a new level with these lightweight Aluminum Midget Race Blocks. They feature a 4.130" unﬁnished bore. Block comes with cast iron sleeves, billet main caps, main cap stud kit and hardware (no bell housing). P5007466 A-4 Aluminum Midget Race Block-8.40" Deck Height, Aluminum Main Caps P5007935 A-4 Aluminum Midget Race Block-9.00" Deck Height, Steel Main Caps C. Aluminum Drag Race Block This Aluminum Drag Race Block features a full bell housing, 4.130" unﬁnished bore, and 9.000" deck height. Block comes with cast iron sleeves, billet aluminum main caps, main cap stud kit and hardware. P5007467 A-4 Drag Race Block (P5 Cylinder Head) P5007636 A-4 Drag Race Block (W9 and W9RP Cylinder Heads)
	A. Cast Iron Cylinder Replacement Sleeve Fits the 4-cylinder A-4 race engine. Sold individually. Use with A-4 Drag Race and Aluminum Midget Race Blocks (P5007466–67, P5007935). P5007788 Cylinder Replacement Sleeve B. Front Cover Gear Drive Set* This Front Cover Gear Drive Set is designed for use with Mopar Performance aluminum 4-cylinder race blocks (P5007466–67, P5007636 and P5007935). P5007469 Front Cover Gear Drive Set (A-4 Block) C. Aluminum Gear Drive Hardware Kit* This A-4 Engine Gear Drive Hardware Kit includes all the parts necessary to change cams (cam hub and all fasteners). P5007853 Gear Drive Hardware Kit (A-4 Block) CAMSHAFTS D. UGL Camshafts These unground lobe (UGL) cams give you the opportunity to dial in the performance you need. Requires ﬁnish grinding before use. P5007468 UGL Camshaft (A-4 Aluminum Race Blocks P5007466, P5007935, P5007636) P5007505 UGL Camshaft (Aluminum A-4 Drag Race Block P5007467) CRANKSHAFTS E. Forged Midget Crankshaft This fully machined Midget Crankshaft features 2.000" rod journals for use with generic racing rods, and a 6-bolt generic bolt pattern on the crank ﬂange. 4340 forged steel. P5007907 Forged Midget Crankshaft-3.075" Stroke (A-4 Block) F. Forged Midget Crankshaft — Unmachined* This unmachined Midget Crankshaft allows you to cut custom cranks. It is forged from 4340 steel and requires complete machining. P5007573 Forged Unmachined Midget Crankshaft-3.00"-3.25" Approx. Stroke (A-4 Block) OILING COMPONENTS* G. Oil Pan Gasket This 0.060" paper Oil Pan Gasket is designed for use with Mopar Performance aluminum 4-cylinder race blocks (P5007466–67, P5007636 and P5007935). P5007722 Oil Pan Gasket (A-4 Block)

CYLINDER HEADS A. NEW! W9 Raised Port Aluminum Cylinder Head This partially machined W9 Cylinder Head with raised intake and exhaust ports is recommended for use in sprint and midget cars. Features: • High-strength, lightweight A356 aluminum alloy casting • Ports raised signiﬁcantly higher than standard W9 Cylinder Heads • Machined deck, intake surface, head bolts and valve cover rail • Ports allow for ﬂexibility in porting (requires porting) • Chamber is cast ﬁlled in to allow very small machined chamber • Requires machining for valve guides, spark plugs, intake screws, porting, chamber, valve spring pockets, rocker stands and injectors • Designed for 13° valve angle • For use on 48° V8 and 4-cylinder blocks • Recommended valve length: 6.040" intake and 6.060" exhaust • 6-bolt head attachment design • Accepts 5-bolt Mopar valve cover and gasket • Recommended for use with T&D rocker arms with 0.750" offset P5007904 W9 Aluminum Raised Port Cylinder Head (Small Block, A-4 Midget Block) B. W9 Aluminum Cylinder Heads* W9 Aluminum Cylinder Heads incorporate the latest in “Paperless Design Technology” to give racers the leading edge. These W9 heads feature high-strength, lightweight A356 aluminum alloy casting. Their thick decks permit small chambers for maximum compression ratios. Heads feature 6-bolt head attachment design for sealing integrity and raised intake and exhaust ports for maximum performance. Heads have a 15° valve angle, with additional material to permit “rolling” the head (except head P5007861 which is 13°). These heads are the same length as block to permit ease of installation with engine plates. Machined for 5.540" intake and 5.560" exhaust valves. Heads accept 5-bolt Mopar valve cover. P5007855 W9 Aluminum Cylinder Head (Small Block, A-4 Midget Block) P5007861 W9 Aluminum Cylinder Head (Small Block, A-4 Midget Block) C. Cylinder Head Stud Kits Contains studs, nuts and washers for changeover of stock head bolts. Sets service V8, enough for 2 Midget engines P5007912 NEW! Cylinder Head Stud Kit (W9 RP Cylinder Head) P4876757 Cylinder Head Stud Kit (Aluminum Block with W9 Cylinder Heads) P4876083 Cylinder Head Stud Kit ("R" Block with W9 Cylinder Heads)