Avoid stacking .300" of shims under the valve spring on your Big Block Chevrolet with our seat spacer. This spacer features a 1.732" outer diameter for 1.568" outer diameter springs.
Seat Spacer for Big Block Chevrolet - 1.568" OD, .623" ID, .300" Thickness
See 4779-8 for a set of 8 seat spacers.
Seat BBC 1.568" OD .623" ID .300" Thick
4779-1 - Rotator Eliminator, CB EXH
COMP Cams Rotator Eliminator CB Exh
Rotator Eliminator, CB EXH
Engine Valve Rotator
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