COMP Cams Spring Seats .040X.810X.880X1.285 - cca4679-16 missing-image Mufflers & Tips::Catalytic Converter Universal

Mufflers & Tips::Catalytic Converter Universal 1975-1981 Chevrolet C10 Cheyenne V8

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COMP Cams Spring Seats .040X.810X.880X1.285 - cca4679-16 missing-image Mufflers & Tips::Catalytic Converter UniversalThe older style standard shims will not hold up to the extreme spring pressures and high RPM found in racing engines being built today. COMP Cams offers a simple but effective solution to this problem a thin, hardened steel alloy seat which will not only protect the head and shim but also locate and hold the spring in place. Previously, this part has been available only in a cup form with the retaining portion being on the outside of the part. This