As with all other parts in the valvetrain, the area where the spring sits takes a beating. The old standard shims simply will not hold up to the extreme pressures and high rpm found in today's performance engines. COMP Cams offers this set of valve spring shims to solve this problem and eliminate failures.

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COMP Cams Valve Spring Shim, Steel, Hardened, 1.640 in. OD, .635 in. ID .030 in. Thick, Each

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Dart Valve Spring Shim, 0.695 in. I.D., 1.250 in. O.D., 0.030 in. Thick Shim, Each

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Crow Cams SHIM 1.437x.50x.060

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COMP Cams Valve Spring Shim, Steel, Hardened, 1.250 in. OD, .814 in. ID .015 in. Thick, Each

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Sonnax Shim, GM, Th350, Th350C, 4L60, 4L60/70-E

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MANLEY Valve Spring Shims, Hardened, Steel, 1.480 O.D., .060 in. Thick, Each

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