I think the whole point of them is to be able to run a wilder cam, but get it to idle on the street. So the lifters themselves don't give a direct performance increase, just an indirect one.
Never having had an engine with these in them, I will shut up now
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The more hair i lose, the more head i get.
Build Sheet:
1969 C-10 short fleet
Constructed by taking a 3/4 ton rolling frame from one truck, adding a rust free AC Cab from another, then a bed from another, 1/2 ton front suspension & brakes from another,add in one Goodwrench crate 350, painted DuPont Arctic White,and driven daily.
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