CHEV 350 4 BOLT PERF ENG

This ATK HP291PC Chevy 350 Complete Engine delivers 330HP and 380TQ. It features an OE 4-bolt main block with a 1-piece seal, suitable for 1987-2000 applications. Key components include a reground crankshaft, OE powder metal 5.7” rods, hypereutectic 9.1:1 compression pistons, and a hydraulic flat tappet camshaft (224/234 @50 .465in/.488ex 112LSA). The engine is equipped with ATK cast iron cylinder heads (76cc/165cc 1.94/1.50 valves), stamped steel 1.5 ratio rocker arms, and a double roller timing chain. It uses a rear sump 5qt oil pan (with specific fitment notes for Chevelles, some Corvettes, and 62-67 Chevy II’s), a Melling high volume oil pump, and an 8” internal balance balancer. Fuel and ignition components include a Pioneer #FRA-159 external balance 168 tooth flexplate/flywheel, an ATK dual plane intake manifold, HEI distributor (iron gear), OE long water pump, Quick Fuel 670CFM vacuum secondaries carburetor with electric choke, and a mechanical fuel pump. It comes with Champion #RV12C spark plugs and 8mm spark plug wires.