Porting and flowing jsut completed on my Indy SR heads. Previously the heads had only been opened to MW size with a clean up. Turned out they were flowing right around 300 on the intake and 240 on the exhaust at .700 lift. Porting and a new valve job increased flow by roughly 50 CFM on both intake and exhaust. Do not have the sheets yet they are coming with the heads.
While these are not a big as some of the numbers I have heard from these heads I am pretty pleased with a 50 CFM increase.

Previously the 493 dynoed 669 hp with a sold roller 280 @0.050 with 700 lift at 12:1

With the porting and roughly a 1 point compression increase (milled heads)any guesses what kind of hp increase should be expected. How about ET (previously 9.85).



thanks