need to go faster went faster

Tire height is not really hurting you. The car would probably like some more gear, or shorter tire is my guess. Always better to go more gear if possible.

It's running pretty good for the time and 60'. Nothing wrong with the 60' so far. Change launch RPM a bit. Hard to answer without seeing video. That's a solid 60' for a 7.70 car.

I have a 528 in a 340 and it pulls all the way to 6500+. Move shift points around to see how it reacts like Moper suggested.

Don't know which converter you have, but, that's the biggest improver you can make if it's not a great one now.