ATK High Performance GM 383 Stroker 525 HP Stage 1 Long Block Crate Engines
ATK High Performance GM 383 Stroker 525 hp Stage 1 long block crate engines are power transplants for your high performance projects. ATK Stage 1 or base engines are designed for builders that have their own component parts already, and who are interested in completing out the build themselves. GM base engines typically consist of the following: short block, camshaft, timing set, cylinder heads, valve covers, timing cover, oil pan, oil pump, and pick up tube.
Engine specifications:
* Horsepower: 525
* Torque: 515
* Block: OE roller block 4-bolt main one-piece seal 1996-2000
* Bore/stroke: 4.040 x 3.750 in.
* Displacement: 383
* Crankshaft: Scat 4340 forged external balance rear of crank/internal balance front of the crank
* Rods: Scat 4340 forged H-beam with ARP 8740 bolts
* Pistons: Forged 10.2:1 compression
* Rings: Moly
* Camshaft: Hydraulic roller
* Cam specs: 246/250 at 50 .603intake/.609exhaust 110LSA
* Timing chain: Double roller
* Cylinder heads: ATK American-made aluminum 70cc/210cc 2.02/1.60
* Rocker arms: Billet aluminum 1.6 roller rockers
* Oil pan: Moroso 7qt. with windage tray
* Oil pump: Melling
* Flexplate/flywheel: Pioneer external balance 168 tooth (with Scat kit)