ATK HP33M Chevy 383 Vortec Stroker Mid Dress Engine 390HP

Engine Specifications: HP: 390 TQ: 460 Block: OE roller block 4 bolt main 1pc seal 1996-2000 Bore/Stroke: 4.040” x 3.750” Displacement: 383CI Crankshaft: Scat Nodular Iron external balance rear of crank/internal balance front of the crank Rods: Scat I Beam 5.7” Rods with ARP 8740 Bolts Pistons: Hypereutectic 9.5:1 compression Rings: Moly Camshaft: Hyd. roller Cam Specs: 220/224 @50 .495in/.502ex 110LSA Timing Chain: Double roller Cylinder Heads: Dart vortec cast iron 67cc/165cc 2.02/1.60 Rocker Arms: Stamped steel 1.5 ratio Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some corvettes and 62-67 chevy II’s) Oil Pump: Melling STD volume Balancer: Internally balanced – PowerBond #PB1046-N Flexplate/Flywheel: Externally balanced – Pioneer #FRA-159 (with scat kit) Intake Manifold: ATK HP dual plane Distributor: HEI (Iron Gear) Water Pump: OE long pump Recommended Components: Carburetor: Quick Fuel 680CFM Vacuum secondary’s electric choke #HR-680 Fuel Pump: Holley mechanical 110GPH #12-327-11 Spark Plugs: Autolite #605 Spark Plug Wires: 8mm Engine Info: Oil: Conventional / Non Synthetic 10W30 Oil Filter: Wix or K and N Timing: 34-36 Degrees Spark Plug Gap: .035” Firing Order: 18436572 Octane: 91+ Stall Converter: Stock Exhaust: 1 5/8 Headers Disclaimer: The parts listed are ATK’s recommendations of parts