Holley 11" x 11" HydraMat, Cross Driver Shoes Heat Shield 4 horsepower in Clone engines

4 horsepower in Clone engines and KRT reduces cam and lifter wear in Flathead engines

rocker stud diameter: 7/16"

1965-1967 Chevrolet El Camino

1961-1974 Pontiac Ventura

30 x 18 x 15

Holley 11" x 11" HydraMat, Cross Driver Shoes Heat Shield 4 horsepower in Clone enginesThe amazing HydraMat is Holley's patent pending design that solves the problems associated with traditional fuel pick ups in stock fuel tanks as well as racing fuel cells. During hard cornering, acceleration, stopping, inclines, and low fuel conditions fuel runs away from the fuel pick up which introduces air into the system resulting in poor engine performance and even stalling. HydraMat is the solution! Surface tension and fluid wicking are the