[Earle Holt]

My understanding is that they can be built to handle alot of HP, but are heavy and internally inefficient compared to the C-4.

Many put a one-piece input shaft in them because the stock two-piece unit is prone to breakage. You probably know this, but Lentech is the leading Co. that has developed the AOD.

I built one for the street years ago and it was great. I moved to a C-4 for the track and the car picked-up at least a couple of tenths. The unique part of using the trans is the shift pattern. To shift it manually, you have to make the 1-2 shift, then pull the shifter back to 1st...the trans will stay in second gear...then you shift again to make the 2-3 shift.