Symptoms of wrong cam installation

I agree.
But..... sometimes not everyone is on the same page as far as how we are determining what the stall speed is.

One other thought on the converter thing.......
If the motor was “right” and the converter were just really tight...... the 1/4 mile speed should still look pretty good.

If the stall is way lower than expected, and the speed is also low........ that points more towards a low HP problem.

the speed is low too. I know it didn't come close to 90 mph in the 1/8. Not looking at his slips, but if memory serves his best 60 foot was high 1.80’s..7.97 and 88 ish mph
I expected to see 7.55 ish at 92-93 minimally, even in the 3500 foot of air that day