wnjj wrote:
What I see in the pictures are two transmissions built by the same manufacturer but that are not the same model. There are plenty of differences in the cases plus you can't tell what's inside for clutch or shaft sizes.
You could be right, or maybe not.
For the sake of discussion, have you considered the fact it's possible
all the differences you see are
improvements in the design of the older Ram 3500 Aisin? That the Nissan Aisin, is, in fact, a better tranny?
There's no rule that says Aisin can't make changes to a specific model tranny to accommodate Nissan's design requirements (or make improvements).
Bottom line, neither one of us can prove our point. But, I will say the fact we're even having this debate bodes well for the Nissan Cummins :)