ATK High Performance GM 383 Stroker 525 HP Stage 2 Long Block Crate Engines
ATK High Performance GM 383 Stroker 525 hp Stage 2 long block crate engines are power transplants for your high performance projects. ATK Stage 2 or mid-dress engines are designed for builders that have their own component parts already, and who also are interested in completing the finishing touches of the build themselves. GM mid-dress engines typically consist of the Stage 1 build plus intake manifold, distributor, water pump, front damper, and flexplate.
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)
* Balancer: PowerBond SFI internal balance 8 in.
* Intake manifold: Holley strip dominator single plane
* Distributor: Pro billet (iron gear)
* Water pump: Weiand action plus long pump
