Engine Carburetor Main Body For Use With Holley #4777 650 CFM Carb Flows 670 Proform Scale assuring proper cam timing and

assuring proper cam timing and lobe lift

Digital display reads in 1 lb increments

Changeable Idle Feed Restriction

Reinforced Box Steel Gussets

Engine Carburetor Main Body For Use With Holley #4777 650 CFM Carb Flows 670 Proform Scale assuring proper cam timing andDirect replacement components to turn a street carburetor into a high performance carb. Get that extra performance out of your ride in less than 30 minutes! Add up to 25 50 HP with the PROFORM 100 percent NEW, high performance carburetor main body with No re built components. Easy swap in, swap out installation utilizing existing metering blocks, fuel bowls, and baseplate. Involves only 14 screws. Has adjustable screw in air bleeds, high performance