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.

NOS offers a variety of nitrous injector plates for Carbureted or EFI applications. Choose from 4150 or 4500 flange and even Sandwich style plates for Holley and Sniper intake manifolds.