Put it in high gear, hold the foot brake and mat the gas pedal, see what it stalls to.
What about using the trans brake to hold the car, pull the 2-step rpm chip and see. Likely somewhere near the 5,400 (+/- 500?).
Even that would make me nervous against the engine's full throttle.
I like the point Al makes about the shift recovery rpm, and I have that data now.
So, the consensus seems to be the converter is a significant reason the car's ET is not as quick as the engine build might think.
And the 4150 carb, too. I can live with 5.50 in the 1/8 mile, knowing the engine has more capability if other things are changed to make use of it.
