Valve Stem Diameter:0.342 in.
COMP Cams race locks are designed for stock or performance engines using 7 degree valve locks. They are manufactured from machined steel and offer excellent valve spring location, so it is not necessary to change to a 10 degree retainer. Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure, these COMP Cams Race valve locks will provide the reliability that you've been looking for.
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