HT502 Truck Replacement Engine

Big towing power at an incredible value! Nothing makes a towing job easier than 502 cubic inches of big-block torque maker! Our HT (High Torque) 502 will give you all of the power you need to move mountains or pull your trailer up over a mountain. The GM Performance Parts HT502 has all of the same great performance characteristics of our other 502 engines, but it has been specifically designed for 1977-and-older trucks that need to tow or work hard.

The HT502 is stuffed with a 4.00 stroke forged crankshaft, 4.47 forged aluminum pistons, forged rods, and a hydraulic roller camshaft. The deep-breathing iron cylinder heads, with their mid-size valves and oval-shaped intake ports, deliver maximum cylinder filling at a low rpm. Working together, this combination provides excellent low-end grunt with 512 lb.-ft. of torque coming in at only 3300 rpm.

The HT502 crate engine is delivered complete with an oil pan, valvetrain, valve covers, timing set, and balancer. You add an intake manifold, carburetor, water pump, starter, and ignition system. All of these parts are available from your local GM Performance Parts dealer.