Speedmaster PCE460.1007 Blower Drive Kit for 6-71 8-71 Roots Supercharger

The Speedmaster PCE460.1007 blower drive kit is designed for Chevy big block (BBC) 454 engines and mounts a 6-71 or 8-71 Roots-style supercharger. It is sold as a supercharger drive kit and includes the pulleys, belt and hardware needed to drive the blower.

Key Features:

• Upper and lower drive pulleys
• Idler pulley and bracket
• Dual V-belt accessory drive pulley
• 3 in. Gilmer-style drive belt
• Gaskets and hardware for installation
• Intake manifold included
• Adapter plate for two 4-barrel carburetors, polished to match the supercharger

Speedmaster's 6-71 street supercharger kits are described as delivering 45-55 percent more streetable power. The supercharger design features double-pinned rotors that are timed and clearanced after assembly, heavy-duty front and rear bearing plates, and an intake manifold with the pop-off valve relocated to the back.