71 Dart get 408/ Trick Flow Heads....

Just a FWIW, that will depend on the retainer and how deep the seat was cut at the foundry. Never mind any other work done to the head or parts changed out.

Absolutely, I'm not looking to try and use his numbers or anything. I replaced all the valve hardware in my SMs, i was shimming the new springs/retainers yesterday, so the topic was in my head.