in terms of power made vs effort the TF's are hard to beat from what I have seen. However in terms of their ability to make real impressive power I'm not so sure
I’ve made in the 580’s with ported RPM heads and an easy on parts roller cam.
You def couldn’t duplicate that level of performance with another set of RPM’s for what you could buy the TF’s for.
So, if the TF’s were exactly as good as that set of ported RPM’s, and made the exact same power........ it would be equal performance for less $$$.
Plus...... you can buy them set up with a 2” installed height and roller springs to accommodate a .700 lift cam.
