Valve Spring Shim - 0.300 in Thick - 1.732 in OD - Steel - Big Block Chevy - Set of 8

Engine Valve Rotator

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.

Additional Information

COMP's seat spacers for Big Block Chevrolet eliminate the need to stack .300" of shims under a spring. These .300" thick locators have a 1.732" OD for use with our 26120 Beehive springs.

Part Type

Engine Valve Spring Seat

Product Overview

*Valve Spring Shims and Kits*
• Equalize installed height of valve spring
• Engineered from the highest quality shim stock
• Heat-treated to withstand radical camshaft lobes
• Available in three different thicknesses to help achieve proper valve spring height
• Shim kits contain (16) pieces of each thickness listed

*Big Block Chevrolet Seat Spacers*
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 not only sloppy, but they also didn't fit well. These seat spacers offered by COMP Cams will locate the spring with an outside step so the spring cannot “walk” around on the head.

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Product Details

Product Downloads

#	Document Type	Download
1.	Catalog

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Reference Information

Valve Spring Locator, Outside Locating Shoulder, Steel, 0.300 in. Thick, 1.732 in. O.D., 0.630 in. I.D., 1.468 in. Spring O.D., Set of 8

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