Manley 42137 Small Block Chevy Pushrod Length Checker, 3/8 Stud

For Small Block Chevy. Just slip it over a 3/8" rocker arm stud to instantly tell how much longer or shorter the push rods need to be.

• Long valves, milled heads, cut blocks, small base circle camshafts all move rocker geometry far from optimum
• Correct length pushrods keep rockers centered on the valve tip and reduce stem and guide wear
• Checker tells the engine builder instantly what length pushrod is required