Trick Flow small block heads
I don't think, like you all, that there has been a big enough cam to show the potential of them heads.
Now with that said, i'm going to put my porting helmet on and say it's going to take more them long duration and high lift to show the true potential.
How much the intake flow compared to the exhaust will predice a different overlap/duration and seat timing.(also reversion come into play here)(could act way different then the eddys)
What i'm saying is the smallest cam for a 408, displayed above, was choose from a off the shelf cam that Maybe eddys likes(just guessing here) and as there is more TF heads, matched to cams(trial and error/ learned)
There may be a lot more potential made for a small cam which will be lessons learned to apply to a bigger cam.