Based on a new GMT900 platform, the Sierra now had a level of sophistication to accompany its power and ability as a truck. A 6.2L sibling of the LS3 was also introduced, giving you the ability to buy a 400 horsepower truck off of the showroom floor.

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.