ATK HP57 Chevy 350 Base Engine 1987-1991 Corvette

This engine is a performance replacement for 87-91 Corvettes, smooth idle great daily driver. Engine Specifications: HP: 289 TQ: 370 Block: OE roller block 4 bolt main 1pc seal 1996-2000 Bore/Stroke: 4.040” x 3.480” Displacement: 350CI Crankshaft: OE Reground external balance rear of the crank/internal balance front of the crank Rods: OE powder metal 5.7” Pistons: Hypereutectic 10:1 Compression Rings: Moly Camshaft: Hyd. Roller Cam Specs: 207/214 @50 .411in/.428ex 112LSA Timing Chain: Double Roller Cylinder Heads: Edelbrock performer aluminum 60cc/165cc 2.02/1.60 Rocker Arms: Stamped steel rockers 1.6 ratio Oil Pan: Rear sump 5qt (Standard SBC oil pan, may not fit some Corvette’s. If not, you must use your original oil pan) Oil Pump: Melling STD Volume Recommended Components: Flexplate/Flywheel: Externally Balanced – Pioneer #FRA-159 Balancer: Internally Balanced – PowerBond 6.75” #PB2221-N Intake Manifold: Stock TPI Intake Distributor: Stock Distributor (Iron Gear) Water Pump: Stock Fuel Pump: Stock Spark Plugs: Autolite #3926 Spark Plug Wires: Stock Engine Info: Oil: Conventional / Non Synthetic 10W30 Oil Filter: Wix or K and N Timing: 34-36 Degrees (set with ECM) 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