Well, I have been wondering why the 3.91.. but with a 318 that makes more sense. I was thinking 3.55 would be better all around and you're still gonna be able to spin tires at will in 1st. But IMHO, it depends on the track(s): I personally would set the rear gear to match the peak engine RPM (minus a few hundred RPM) in 3rd gear at peak expected speed on the long straights. I personally would not set the rear gear 'just' to limit rear wheel torque... again, torque management are what your brain and right foot are for.
And I would expect you to use 1st in some auto-x's that are set up tight to be fair to smaller, low HP cars.
And IMHO yes on the 11"..... stall in the lower 2000's range; better torque control from the throttle with the TC locked up is my thinking. (But realize that I come from a racing world where traction is very limited and torque control is really vital.) Autoxcuda may have a better viewpoint.
