3 speed in SS, which trans with brake

[Tom Goldman]

You are correct Maurece , I just usually use the 2.48 number as a generic ratio for most three speeds.

[ShadowLands]

Originally Posted by Tom Goldman

The TH350 ,if the stock 2.48 first gear suits your combo, can be built with an aluminum drum ,TH 400 int sprag , trans brake valvebody for less than half the cost of the Pro Trans.
I would venture a guess that the performance advantage of the Pro Trans over the TH35 would be about .080-.120 second. depending on the ratios used.

What about the Coan XLT 350 versus the Pro Trans? My application is a heads up crate engine class with one weight, one engine, one specific EFI tune.