4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] Speedmaster hub and piston kits

Speedmaster hub and piston kits are engineered for enhanced Powerglide performance

they come in three different finishes and feature a billet aluminum oil fill cap

Increase your horsepower and torque for your ride--just bolt on these Speedmaster headers

dual plane fuel injection intake manifolds allow the installation of dual throttle bodies on late model LS Series engines

The precise design of these Speedmaster carburetor spacers provides a smooth transition of fuel from the carburetor to the intake manifold

4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] Speedmaster hub and piston kitsThis Speedmaster design features tubes instead of discharge nozzles that provide a more consistent fuel flow. Want to upgrade your street carburetor to a high performance race carb but don't have the means to do a complete carb swap? If you can turn a screwdriver, you can get 25 to 50 HP from these Proform main bodies. With no air horn, choke tower, or choke control to restrict airflow, they deliver extra power easily and affordably.