I am currently run the stock converter behind my 700R4 and was thinking about a Vigilante TC. This is not a daily driven car but it is also not JUST a track car either.
With BFG DRs I have been able to run 1.8-1.9 60fts launching at idle with about 20psi. I *may* be able to get better launches with lower tire pressure but with a good burnout I no longer have any considerable traction problems at the strip.
What is the best way to determine the stall speed needed?
If you need motor specs click below, thanks.

 

ttt

 

Ideally you want a convertor that is around your peak torque rpm. With your torque peak @ 3900, I would get a 10" 3500 stall for street/strip application. They are relatively cheap and effective, if you go smaller than 10" for a S/S car then heat becomes a serious issue that'll eat up your tranny without proper cooling.

 

The Vigilante is an excellent choice for the Street, will help 60 foot times with the proper traction. We have found that low air pressure in drag radials to slow the vehicle down. You might find adding more air pressure to help. As for cooling, just add an external cooler. I have hundreds of 9.5" lockup torque converters out there with very little problems. In determining a stall, you have to consider what the car is intended for?, daily driver, weekend warrior, etc. The other is how you drive?, conservatively, moderately, or aggressively. And last, the kind of driving you do. These all come into play when determining the stall speed. With what Precision Industries (Vigilante) has to offer, it's hard to go wrong.

 

Thanks for the advice. My torque peaks actually lower than 3900 RPMs but that is when they started the dyno. That is also before the SuperRam. I plan on getting it dynoed again to get up-to-date figures.

I guess you would call my car a weekend warrior.
I drive it only once a week for a short trip (1-10 miles).
In terms of driving style I would say moderate.