Classic over carburetion problem?

Not apples for apples, but dad ran a tunnel ram and 660's on my cars original 340. He had a much bigger cam, slight head work in X heads, but stock converter at the time and 4.56's. Smolder tires at will, no hesitation. At the track he would spin the tires 1/2 way thru first gear and run 12.0 at 115mph. That was early 70's. I agree with most, tuning and notes.