The GMT800 HD trucks were a massive step forward for GM's truck division. The available engines included the LS-based 6.0L, the big block 8.1L, and the line-topping 6.6L LB7, LLY, or LBZ Duramax diesel. Whether gas or diesel, we have the parts to take your truck to the next level on the street, worksite, or drag strip.

Holley is your headquarters for LS Power. If your next project is LS-powered, we have everything you need from intake to oil pan to get your engine between the frame rails of your LS Swap project.