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Valve Spring Kit - Conical - Single Spring - 519 lb/in Spring Rate - 1
Carbon Fiber Composite - 24 x 39 in - 0
625 in Bolt Circle - Standard Plate - GM - Each
550 in Long - 5/16 in Diameter - 0
Oil Filter - Extended Performance - Canister - Screw-On - 3
Holley - 750 CFM - 4150 - Mechanical Secondaries - Shiny - Gasoline Valve Spring Kit - ConicalHolley Double Pumper carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Double Pumper is designed for