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GM Performance Piston and Connecting Rod Model
Fits All Filters
Open and Tapered Inserts
Chrome plated steel with plain top and recessed base for low profile fit over carburetor
more and is 1 inch longer than P/N 66256
Engine Carburetor Main Body For Use With Holley 4777 4778 4779 4780 Carbs Proform Tubing Notching Tool GM Performance Piston and ConnectingNow made of ALUMINUM! Direct 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
