ATK Engines HP94 Small Block Chevy 383 Stroker Base Engine, 415HP

The ATK HP94 Chevy 383 stroker base engine is a strong street-performance small block built to deliver 415 horsepower and 460 ft.-lbs. of torque with a proven combination of aftermarket internals and aluminum heads. Featuring a 4-bolt OE roller block, Scat crank and rods, hypereutectic pistons, a hydraulic roller cam, and ATK high-performance aluminum heads, this 383 is designed for reliable power, crisp throttle response, and solid street manners with the flexibility to complete the build with your preferred induction and accessories. Engine Specifications:• HP: 415• TQ: 460• Block: OE roller block 4 bolt main 1pc seal 1996-2000• Bore/Stroke: 4.040” x 3.750”• Displacement: 383CI• Crankshaft: Scat Nodular Iron external balance rear of crank/internal balance front of the crank• Rods: Scat I Beam 5.7” Rods with ARP 8740 Bolts• Pistons: Hypereutectic 9.7:1 Compression• Rings: Moly• Camshaft: Hyd. Roller• Cam Specs: 220/224 @50 .528in/.536ex 110LSA• Timing Chain: Double Roller• Cylinder Heads: ATK High Performance aluminum with 2.020 in. /1.600 ex. valves• Rocker Arms: Billet aluminum roller rockers 1.6 ratio• Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some corvettes and 62-67 chevy II’s)• Oil Pump: Melling STD Volume• Flexplate/Flywheel: Externally Balanced – Pioneer #FRA-159 (with Scat kit) Recommended