TFS Streets vs A429

OK...So I made the switch..Last week my A429's went a 5.669 at 119MPH with a 119 60ft...This week I installed TFS Streets and I got a 5.643 at 121MPH with a 120 60ft. I think there is some more to be found in the tune up with the TFS heads. I upped the timing from 29 to 31 and retarded the cam from 3 A to 1 R and it liked both.Still way off what I was hoping for , but it still is a bad machine.

Dan, Have you ever had your motor on a dyno

No Rick,it's all track tested. I wish I could afford the luxury. If I ever build a Big Bad one ,it'll go to the dyno. This a 514 stock 2 bolt and a scat cast crank deal.It's a flat top piston Jon

so he put these heads on and lowered his compression on an alky deal ???? doesnt sound good to me ....

Alky likes all compression ratios Nick. I haven't cc'd my A429's ,but I don't think there's much difference in chambers on the heads. It still runs good for what it is, you just always want more

so were you a-429 otb or were they rubbed on ..... and what about the TFS's were the rubbed on and do you have any flow #s Dan

Both sets have been ported by Charlie. I'm not sure on the flow #'s on the A429's .I think they are in the 345 range and the streets are 380. They're both good heads IMO....

cool deal ...... plus im sure the existing cam is not optimum .....

You picked up a little mph so it's making more power. Would be nice if you could run it through the 1/4 to see what that mph and ET is compared to your previous combo. More tweaking & tuning...