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This .750" polymer thrust button from COMP Cams is made to set camshaft endplay on Chrysler 383–440 and HEMI engines. The nylon button is shim-capable to dial in correct clearance during camshaft installation or when converting to roller lifters. It’s a straightforward service part for maintaining proper cam thrust control in vintage Chrysler big-block builds.
COMP Cams Cam Button Fiber Type 426 Hem
