Torque Converter? Where am I at? What is compromised?

yes; 27.3" tires math to 2628rpm@ zero slip, and 2700/2628=1.027= 2.7% slip, which is right where I would expect it to be. I forgot your current tires were shorter.

I included the math so you guys can figure stuff out for yourselves, and not think that more highly of me than you ought to; I just plug the numbers into the appropriate places and let the formula be the wizard.
Here it is in shorthand
MPH = (rpm x Tire roll-out)/ 1056x R1 xR2 xR3
where
>Tire roll-out is in inches & can be tire circumference, or diameter x Pi
> Pi is 3.1416
>R1 is the trans gear
>R2 is the rear gear
>R3 can be any other torque multiplier you might have such as;
an overdrive/ transfer case/ gear splitter/or Torque Convertor/ etc.
>1056 is a constant that converts everything to the same units