Don't have a specific number in mind......this short block with iron head flowing around 250/195 went 10.90s on good days but mostly 11.0s. It see's 0 street time, just looking to make a great bracket car........in a lot of the 1/8 races I end up being one of the slower cars it seems running in the 7.0 and 6.9s. So the new heads were the logical next step. I know my car is heavy at 3850 car and Driver on either 29x 10s or 30 x 9s neither tire makes a huge difference and depending on what in at when I need is what I get. I would hope with a little more squeeze I could see low 10s. The next step is build a car that scales in less. I don't have the funds right how to swap intakes, I never new b4 I bought the sp2 an intake like the spx could even be made to run on the te2 heads,
Go to this link and check Bills stg2se, 308s etc that made 703hp I can't remember the flow #s on his heads as I did them last year but I think they were in the 350's @ .600 the guy that ports Bobs heads is a excellent head porter so they will make excellent power and run hard. I think that 308s is a great grind that has made great power on iron or aluminum heads and sounds really good also. http://www.v8buick.com/index.php?threads/out-with-the-old-in-with-the-new.323821/