4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] Increase your horsepower and torque

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

You need guideplates to keep your pushrods from deflecting under high-rpm conditions

they offer excellent heat resistance and long-lasting performance

Impala and Buick Roadmaster

These rods incorporate a special doweled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications

4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] Increase your horsepower and torqueThis 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.