1/4 mile times

I think the stall he has in it is fine.

Its not a small block, its a 440.
Heaps of torque.
It should be jumping off the line,i dont think your tune
is right,750 cfm is abit small for a 440 but other than that
i say the motor needs some sorting/tune.
3.9's is plenty!

It should be 113-115 mph an into the 11's for sure with that
setup.

Tuning is everything.