I really don't, but have it written down somewhere... 170'ish sounds about right, they are 160 as cast with 1.88 intake valves
Just bowl, short turn , kink work.
If you can find head with good tall exhaust short turns...they're valuable. You can get a pair from the same stock motor and and up with one that does great, better than average and the other struggle... ported even. Got a guys heads that one is great on the exhaust while the other is 25cfm behind...put clay in the low dead side, 1/4 with is all...and then it does 195 by .400...
Sometimes I wonder if when they design these heads and cast...that if somebody then put them on the bench and said oh no this exhaust Port works way too good... let's go ahead and just carve this section out here and that'll "fix" it. All they had to do was raise that side.Maybe they had the foresight to bolster their performance head sales that way..? "they have to buy a head"
