COMP Cams 14121 Loose Roller Rockers

For small block Chevy applications, 3/8 inch stud, 1.52 ratio, Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift, 15 to 30 horsepower increase over stock rocker arms, Use in any applications with less than 350 lbs. open spring pressure, Made from 8620 chromemoly steel that will not flex