Originally Posted by
LARIAT 85
I agree with the fact that the C6 is a stronger transmission in stock form than the AOD and is better suited for towing.
But I don't see how anyone can say that an AOD with 3 gears plus
overdrive doesn't get better fuel economy than a C6 transmission with only 3 gears.
Good point, Lariat! Driven wisely the AOD would have to return equal if not better MPG than a C6 since you could just lock out the OD and you would have the same top gear as the C6. Further, in the right circumstance you could do even better by using the OD. In addition, some have said the C6 has high internal loss while the C4 has less, and IIRC, the AOD is based on the C4.
So, let me restate things: IMO swapping out the C6 for an AOD isn't worth it for what honocor said he will be doing as the gain, and there should be some, would not offset the expense and hassle. And, that's side-stepping the reliability issue for towing.