Overview
ATK High Performance Chevy 383 Stroker 470 HP Mid-Dress Long Block Crate Engines
Looking for an engine that puts out big power and sounds flat out NASTY!? You will find those features and more with ATK High Performance Chevy 383 Stroker 470 hp long block crate engines.
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
