ATK Engines HP99C GM Chevy Vortec 350 Complete Crate Engine 290HP

The ATK HP99C Chevy 350 Vortec complete engine is a solid small block street engine built to restore dependable V8 performance with a mild performance edge. Delivering 290 horsepower and 375 ft.-lbs. of torque, it combines a roller cam-equipped OE block, hypereutectic pistons, Vortec cast iron heads, a dual-plane intake, and complete top-end components for a ready-to-run package with strong low-end torque and reliable everyday drivability. Engine Specifications: HP: 290 TQ: 375 Block: OE roller block 2 bolt main 1pc seal 1996-2000 Bore/Stroke: up to 4.060" x 3.480" Displacement: 350CI Crankshaft: OE Reground external balance rear of crank/internal balance front of the crank Rods: OE powder metal 5.7" Pistons: Hypereutectic 9.4:1 compression Rings: Moly Camshaft: Hyd. roller Cam Specs: 191/194 @50 .414in/.428ex 111LSA Timing Chain: Single Roller Cylinder Heads: Vortec cast iron 64cc 1.94/1.50 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 Intake Manifold: ATK HP dual plane dual plane Distributor: HEI (Iron Gear) Water Pump: OE long pump Carburetor: Quick Fuel 670CFM Vacuum secondary's electric choke