My 202 valve eddy heads that were lightly debured and cleaned up ran 9.87 . Trick flow heads with my same rockers and springs ran 9.78 but that was with a little bigger cam and a 950 carb versus the previous 850. I was hoping for a little more as we all do.was close to 5 k to gain a tenth gets harder to go quicker when these cars get to this point so I will be happy with what I have out of this 340 for next season as is lol [QUOTE="oldkimmer said Well I’ll say it: the trick flow 190s are barely any better than the Procomp /Speedmaster 190 CNC heads. Kim Click to expand...