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The COMP Cams seat spacer for late-model Big Block Chevrolet engines replaces stacked shims and restores proper spring location where exhaust valve rotators are present. This .300" thick locator features a 1.732" OD with an outside step that prevents the spring from walking on the head, and is sized to fit springs with a 1.468" OD and 0.630" ID for a cleaner, more secure installation.
COMP Cams Rotator Eliminator Exh For 26
