COMP Cams 4698-1 Seat Spacer for Big Block Chevrolet - 1.468" OD, .630" ID, .300" Thickness
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These Big Block Chevrolet seat spacers are .300" thick and have a 1.732" OD They fit springs with a 1.468" OD and 0.630" ID Late model Big Block Chevrolet engines are originally equipped with exhaust valve rotators. Until now, the only way to make up for the rotator was to stack .300" of shims under the spring. This was sloppy but also did not fit as well as these seat spacers. These will locate the spring with an outside step so the spring cannot "walk" around on the head.
COMP's seat spacer for Big Block Chevrolet eliminate the need to stack .300" of shims under a spring. This .300" thick locator has a 1.732" OD for use with our 26120 Beehive spring.
Please review Specifications and the detailed fitment table for notes and exceptions.