CHEVY 350 PERF ALUM COMP

The ATK HP89C is a complete, factory-built, and tested Chevy 350 crate engine, producing 390 horsepower and 420 lb-ft of torque. It features an OE roller block (1996-2000, 4-bolt main, 1-piece rear seal), a 4.040” x 3.480” bore/stroke, and 350 cubic inches of displacement. Key components include: OE reground crankshaft, OE powder metal 5.7” connecting rods, hypereutectic pistons (10:1 compression), hydraulic roller camshaft (220/224 @.050” duration, .528”/.536” lift, 110LSA), double roller timing chain, ATK HP aluminum cylinder heads (64cc/195cc, 2.020” intake / 1.600” exhaust valves), and billet aluminum roller rockers. It comes with an ATK dual plane intake manifold, Quick Fuel 670CFM vacuum secondary carburetor with electric choke, mechanical fuel pump, HEI distributor (iron gear), 8mm spark plug wires, Autolite #3923 spark plugs, OE long water pump, and a rear sump 5qt oil pan.