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The COMP Cams Duramax GM 6.6L 258Xd mechanical roller cam is aimed at modified performance applications that include exhaust and programmer upgrades, providing a balance of increased output while retaining limited towing capability. As always, verify piston-to-valve clearance before installation; COMP recommends at least .080" intake and .120" exhaust clearance for most applications to prevent interference.
COMP Cams Camshaft Gm6.6L Duramax 258Xd
