243 intake and exhaust volume's before and after porting diy head porting
#121
11 Second Club
iTrader: (2)
I never CC'd mine but was told by Mike that they were around 222ish and
the exhaust port shape appears stock D shaped and the cutter just barely
touched the casting. The EX seat appears to be a radius and the flow #s are
with a pipe which I think is about 20 cfm. My self modded 241s with the GM
valvejob flowed 200 w/o and 220 w/pipe @ .600"
the exhaust port shape appears stock D shaped and the cutter just barely
touched the casting. The EX seat appears to be a radius and the flow #s are
with a pipe which I think is about 20 cfm. My self modded 241s with the GM
valvejob flowed 200 w/o and 220 w/pipe @ .600"
#123
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