I have yet to run them, but got a solid 5% flow improvement by going to a 2.300 intake valve from 2.25, and didn't lose much exhaust flow when they cut the exhaust to 1.78 to make it work. Lets hope the $970 was worth it! Here is a flow sheet,,,,

Last edited by gregsdart; 10/23/09 06:15 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky