Description: Heart-stopping horsepower. Here at last is the king of all big block crate engines from GM Performance parts. These 502 cubic inch engines come fully assembled and are rated at approximately 9.6:1 compression with 502 hp at 5,200 rpm and 567 ft./lbs. of torque at 4,200 rpm. These complete engine kits make extensive use of aluminum to keep weight down. Including(more)

Description: Heart-stopping horsepower. Here at last is the king of all big block crate engines from GM Performance parts. These 502 cubic inch engines come fully assembled and are rated at approximately 9.6:1 compression with 502 hp at 5,200 rpm and 567 ft./lbs. of torque at 4,200 rpm. These complete engine kits make extensive use of aluminum to keep weight down. Including aluminum heads, intake, water pump, and valve covers. Additionally, these engines are full of heavy duty parts including, forged aluminum pistons, forged shot peened steel connecting rods with 7/16 in. bolts, forged steel crankshaft, 14 in. automatic transmission flexplate, four bolt main blocks, stainless steel valves, 6 quart oil pan, and windage trays. These complete engine kits come with generation VI 4-bolt main blocks with 1-piece rear main seals. Hydraulic roller camshaft specifications are .527 in. intake lift, .544 in. exhaust lift, and the duration at .050 in. for intake is 224 and 234 for exhaust with a 110-degree lope centerline. Single roller timing chain and aluminum large oval port 110cc combustion chambered heads. Intake runner volume is 290cc installed are stainless steel valves 2.25 in. intake side and 1.88 in. on the exhaust side. Valve springs are rated at 140 lbs. closed and 368 lbs. open, good for up to .680 in. lift. These heads have exhaust crossovers. Aluminum high-rise dual plane square bore bolt pattern intake manifolds are included. (minimize)