To see if you have a fuel starvation issue, just put a 'T' in the fuel line by the carb, and run a hose outside the engine compartment so that you could monitor a fuel pressure gauge during the run. I have made a good number of passes with a fuel gauge and hose under my driver's side wiper when chasing this kind of problem.

And the 1.89 60' seems a bit 'lazy' to me. Street cars should be able to get into the 1.60s. If you can get the 60' there, that would go along way to your goal IMHO.