Help my crap 60ft times!

Shift point? Do you have a shift light?

Have you fiddled with pump cams and such to improve 60' times?

With that tire and a 3.91 gear, you should be at 78mph at 3800 rpm with ZERO converter slip. I'm thinking you either don't have that gear or you read the tach way wrong. That RPM sounds about right for a 2.92 gear @ 106 mph (don't know if there's any such gear that's exactly that ratio, but you see what I mean).

1.90 isn't a bad 60' time for a street radial tire on an average track. A sticky tire will do better. If you really only have that highway gear, you need more gear before you go to the sticky tire, and 1.90 is an awesome 60' - LOL.

Have you tried just "flashing" the converter off of close to idle at launch? I expect on a street tire that wouldn't work, but might help on a slick.