Chevy GM LS1 LS2 LS3 LS6 Aluminum Complete Serpentine Belt Drive System Kit Speedmaster H-beam connecting rods are

Speedmaster H-beam connecting rods are perfect for supercharged and nitrous applications

Kit includes adapter plate to permit use of certain square bore style carburetors

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

They also offer the potential for improved fuel economy by making the engine more efficient

Chevy GM LS1 LS2 LS3 LS6 Aluminum Complete Serpentine Belt Drive System Kit Speedmaster H-beam connecting rods areThe 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.