Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: Valve locks - Stamped vs. Hardened Steel
Chad, the two are not the same. Not sure what everyone else uses with stock stuff and retainers, but I always match the retainer to the lock. Its my understanding over the years that 7° hardened locks with stock retainers.
I have gone a step further when I went to taller spring ,longer valves and higher spring pressures. Because my heads cam with titanium retainers I use the recommended hardened keepers for 8MM valves. The costs are not that great to ensure lock pull thru. What you don't want is to use them with the alloy retainers.
You may get mixed views on this subject but everyone has their own idea.
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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