Manley 42133 Pushrod Length Checker for Big Block Chevy

For Big Block Chevy. Just slip it over a 7/16" rocker arm stud to instantly tell how much longer or shorter the pushrods 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