Chevy GM LS1 LS2 LS3 LS6 Aluminum Complete Serpentine Belt Drive System Kit Experience unparalleled performance and power

Experience unparalleled performance and power with Speedmasters 6-71 Complete Supercharger Kitengineered for maximum horsepower and durability

Kits include: Fully assembled aluminum cylinder heads

They start to make awesome power around 3

Our dual plane big block manifold is now available with rectangular ports

They have injector bosses precisely positioned and machined for excellent fuel spray patterns and maximum power

Chevy GM LS1 LS2 LS3 LS6 Aluminum Complete Serpentine Belt Drive System Kit Experience unparalleled performance and powerThe Speedmaster high mount serpentine kit for Chevy LS engines. 6 rib serpentine pulley designed to increase grip, reduce stretching and prevent the belt from slipping.