Overview
ATK High Performance GM 383 Stroker 525 HP Stage 3 Long Block Crate Engines
ATK High Performance GM 383 Stroker 525 hp Stage 3 long block crate engines are power transplants for your high performance projects. ATK Stage 3 or complete engines are designed for those that want to drop the engines into their projects and fire them up. ATK tries to outfit the engines as completely as possible to save you time and headaches. GM complete dress engines typically consist of the Stage 2 build plus carburetion, spark plug wires, and spark plugs.
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
* Carburetor: Quick Fuel 750 cfm mechanical secondary no choke
* Fuel pump: Holley mechanical 110 gph
* Spark plugs: Autolite
* Spark plug wires: 8mm
