70 dart 470 ci drag car build.

I don’t have a good sense on how your intake mods may have affected the operating range.
The experiences I’ve had with them(RB version) is that they peak early.
If that trend continues, it will put a little hurtin on the “big number”.

Fundamentally I’d be expecting over 700 out of that combo, but I just wouldn’t have it in me to spend that much time on the manifold.
I hope the efforts pay off.

I was trying to recall if I’ve ever tested any std port engine that made it into the 700’s……. And I don’t think I have.
There have been a few in the 690 range.

But I do feel like it is something I could do now.