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Built-In 2-Door Surge Tank (Left)
External Balance
Aluminum flywheels and drive flanges are made from aircraft grade 7075 aluminum
1987-1989 GMC V3500
COMP Cams 1.640" O.D. Spring Shim Kit 35501 Built-In 2-Door Surge Tank (Left)This shim kit contains . 015", . 030" and . 060" thick Valve Spring Shims with 1. 640" outside diameter and . 635" . 650" inside diameter are used to equalize the installed height of valve springs. Made from the highest quality shim stock, these shims are heat treated to stand up to radical cam lobes. Kits are also available. This COMP shim kit includes a number of 1. 640" diameter shims of various thickness. This kit includes 16 . 015" thick shims,
