What is the rest of the exhaust system, and will you keep the full exhaust on at the track?

What is your anticipated DA?

And, does the car leave hard now?

For me, the biggest variable is the quality of your initial tune.

The car should run a 1.9-ish sec. 60 ft with that gear and small slick. Maybe a little better. That motor should pull a 4000 lb B-Body to 109 - 110 mph. You put those together, and a <2000 DA that is well into the 12s, Like 12.70 - 12.60.

First time out, my guess is low 13's at 106 mph.

I agree with Wize on the VS springs. You might find that less spring than what works on the street will give a better et. You'll be in 1st gear a long time and the vacuum signal to the secondaries is slow to build.

Also, In my experience, shift point really matters on lower power street cars that are not back into the converter on shift recovery.

Between the secondary spring and shift point, you might find 3 or 4 tenths and a few mph in your first outing.

Good luck!