CHEVY 383 525HP COMP/DYNO

Engine Specifications:
• HP: 525 • TQ: 515 • Block: OE roller block 4 bolt main 1pc seal 1996-2000 • Bore/Stroke: 4.040 x 3.750 • 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: Hyd. roller • Cam Specs: 246/250 @50 .603in/.609ex 110LSA • Timing Chain: Double roller • Cylinder Heads: ATK aluminum 72cc/220cc 2.08/1.60 • Rocker Arms: Billet aluminum 1.6 roller rockers • Oil Pan: Moroso 7qt with windage tray • Oil Pump: Melling • Balancer: Dayco SFI internal balance 8” • Flexplate/Flywheel: External balance 168 tooth (with Scat kit) • Intake Manifold: Holley strip dominator single plane • Distributor: Pro billet (Iron gear) • Water Pump: Weiand action + long pump • Carburetor: Proform 750CFM mechanical secondaries no choke • Fuel Pump: Mechanical • Spark Plugs: Autolite #3923 • Spark Plug Wires: 8mm
Engine Info:
• Oil: Conventional / Non Synthetic 10W30 • Oil Filter: Wix or K&N per application • Timing: 34-36 Degrees • Spark Plug Gap: .035” • Firing Order: 18436572 • Octane: 91+ • Stall Converter: 3500+ • Exhaust: 1 ¾ Headers
Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and other aftermarket parts. ATK reserves the right to substitute parts used in engines if necessary.