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COMP Cams nylon thrust buttons for Chevy big‑block engines set camshaft endplay and help prevent fore/aft cam movement. The .945" length is specified for 396–454 big blocks and can be shimmed to achieve proper endplay. Install this thrust button when converting to roller cams or when precise camshaft endplay adjustment is required on compatible Chevrolet big‑block applications.
COMP Cams Roller Cam Button Chevy Big B
