The HT 3.4 is rated at 160 horsepower and 194 lb.-ft of torque. That's an increase of 50 horses and 46 lb.-ft.! And it bolts right into the engine bay.

The HT 3.4 rejuvenates your truck with strong low-end torque and mid-range horsepower, giving it increased capability and towing capacity. It is a direct replacement for a 1982-1985 S-truck (S-10, S-15, Blazer and Jimmy) originally equipped with the 2.8L V-6 and automatic transmission.

GM Performance Parts delivers the HT 3.4 in a long-block assembly. To complete the engine, you simply swap the necessary parts, such as the intake manifold and carburetor, starter, water pump, etc., from the 2.8L engine.