For comparison, in 69-71 I had a A-12 , my buddy had a 67? Plymouth Hemi.
These were both pretty much factory set-up when we did some street racing in 69, (timing and jetting were
played with)
Both 4:10s, street tires.

First couple of times we raced, I put a car on him early, he came back on me slowly, but couldn't
catch me before the 1/4.

He went home, changed to 4:56s and reversed the out come, but I couldn't close on him at all.

My car ran 13.6s at 106 consistently at a local track in that tune.

Pretty much what that film alluded to.

Joe