4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] and TFX 2002 engines

and TFX 2002 engines

third member cases are made from heavy-duty nodular iron for maximum strength

increases valve train life dramatically

The Speedmaster serpentine belts are manufactured from a synthetic neoprene compound that resists heat

Try using Speedmaster steel crankshaft pulleys to increase horsepower and reduce accessory drag

4 Barrel Billet Aluminum Carburetor Main Body - 4150 Double Pumper [Black] and TFX 2002 enginesThis 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.