[MidOHasp]

Only thing I'd do different about my superformance is I'd get the "II" from Tremec (.82 OD) with lower (numerically) rear-end. There's no reason to have a 40MPH first gear with over 500 horsepower and almost 550TQ.

I'd prefer a smaller gap between 4th and 5th and for 1st to be more usable. I'm pretty sure w/ current gearing if I was in 2nd gear and tried to launch with anything but a dainty throttle foot, I'd still be sideways. Forget about 1st.

I keep saying "well when I blow this tranny up, I'll get the "II". But from the sounds of most Tremec owners, that probably isn't on the near horizon unless I try really hard.

Also, I have the 3550, and was told that I wouldn't have any problems with it, not even with the 500HP and 540TQ. Not sure what other opinions are, but if you are planning to go with the 385HP Ford Crate 351W, you may want to consider the 3550 (as opposed to the 'TKO'). My understanding (correct me if I'm wrong) is that the 3550 uses brass or bronze syncronizers as opposed to steel ones on the TKO and that they are softer, thus creating a smoother shift.

Tremec experts, I didn't make that one up myself, I heard it or read it somewhere. So if it's completely wrong, I can laugh about it, just let me know.

All I know is most say the 3550 will hold up to 500 HP no problem. The torque ratings on those are for dry torque - i.e. - no wheelspin or anything. Just torque applied to a fixed object.

FWIW.....