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590 in Bore
050'' offset the intake rocker arm will be at a slight angle and the roller tip will not be perfectly parallel or centered on the valve tip
Fits 1982-1995 Ford
3/16 in Aluminum Mandrel
COMP Cams 3/8 Valve Stem Seals Posi. Stop Teflon .530 Water Neck Spacer 590 in BoreCOMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger than stock diameter spring is used, in the case of a double spring, the positive stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon
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