Description
Overview
Chevrolet Performance HT502 Long Block Crate Engines
Chevrolet Performance HT502 long block crate engines offer tremendous value and performance. They’re based on the Gen VI 4-bolt mains with one-piece rear main seal blocks.
Features include:
* Approximately 8.75:1 compression
* 406 hp at 4,200 rpm
* 541 lbs.-ft. of torque at 3,200 rpm
* 4.000 in. stroke, forged steel, externally balanced crankshafts
* Forged steel connecting rods
* Forged aluminum pistons
* Hydraulic roller camshafts with .480 in. intake lift, .483 in. exhaust lift, 204 intake and 209 exhaust duration at .050 in., and 112 degree lobe centerline
* Cast iron cylinder heads with oval port 118cc combustion chambers
* 275cc intake runner volume with 2.07 in. intake valves and 1.73 in. exhaust
* Configured for 3/8 in. thread 7/16 in. shank rocker arm studs
* Stamped steel, self-aligning, 1.7:1 ratio rocker arms
* ACDelco spark plugs
* Oil pans
* Black powdercoated aluminum valve covers and timing covers
* 8 in. harmonic balancers
* 14 in. automatic flexplates
Engine Assembly, Crate Engine, HT502, Each