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Sorry, but I don't have that information. I never installed the Comp lifters in either motor they were purchased for. I got the word from other engine builders that they were very unreliable, so used the Hughes (Morel) in both engines. I have 4000 miles on mine now with no problems or noise of any kind.



Glad to hear the Morels are working ok for you. I'm going to order a set and give them a try.

1970 Road Runner 505 cid MCH CNC ported Stealth heads MP 528 camshaft 4 speed GV overdrive 11.98 @ 117 on street treads