David Vizard, Uncle Tony's garage, Unity motorsport. Mission impossible Dodge 302 Head porting

Nope. Here it is again: If you can use all that 195 cfm what happens when you use more..........emphasis on "use" and "more".

What size did GTXJohn say his heads are cc wise that powers that 4000lbs wagon into the 11's again? With only .390 lift as well.

I still race a 318 small valve 302 4000Lb Aspen /Wagon with stock 390 lift cam and stock compression/
heads/manifold/ carb when I am not feeling good enough for the faster cars. I was shocked how well the stock 302 flowed compared to
my best 202 X heads up to max lift of 390 on the same bench even with the tiny valves (Hint: well over 200 CFMS's with the
right valve job.

The Wagon held the O/SA NHRA record @ 11.83 @ 109MPH. complete with Roof Race and Air Deflector
for years!

Technically yes but reality no, efficiency is relatively narrow especially in the engines were dealing with 1-1.5 lbs-ft per cid and generally it's much narrower for the majority of builds.
So air flow be it NA or power adder and NA gonna be ultimately through head flow.
So when you throw a head that flows 240 cfm on that engine does that automatically make 480 HP?