ATK High Performance Chevy 383 Stroker 470 HP Mid-Dress Long Block Crate Engines HP101M

ATK High Performance Chevy 383 Stroker 470 HP Mid-Dress Long Block Crate Engines HP101M

Engine includes:

– Intake manifold: Weiand Stealth dual plane
– Harmonic balancer: PowerBond 8 in. internal balance
– Distributor: MSD GM HEI distributor
– Includes a GM long water pump

Specifications:

– Horsepower: 470 hp at 5,200 rpm
– Torque: 490 lb.-ft. at 4,800 rpm
– Block: Seasoned GM 4-bolt main with one-piece seal and passenger side dipstick
– Crankshaft: Scat nodular iron
– Connecting rods: Scat 4340 Forged I-beam with ARP 8740 bolts
– Pistons: Forged
– Piston rings: Moly rings
– Compression ratio: 10:1 compression
– Camshaft: Hydraulic roller
– Camshaft specifications: 224/236 duration at .050 and .591in/.591ex lift with a 108 degree lobe separation
– Cylinder heads: Dart SHP aluminum 72 cc chamber with 2.02 in. intake and 1.60 in. exhaust valves
– Rocker arms: Billet 1.6 ratio aluminum roller rockers
– Oil pan: Original-style 5-quart pan
– Oil type: 10W30
– Recommended plug gap: 0.035 in.
– Water pump: Designed to use a long water pump
– Fuel type: Dyno testing was done using 91 octane fuel
– A 2,500 rpm+ torque converter is recommended for best results
– Engine will not produce enough vacuum for power brakes