NV4500 LD or HD

[Richard2112]

There is a ton of information on trans swaps here and they all have variants of one sort or another. Peppered sporadically throughout those threads are tidbits of information useful to some reader, or not.

The intention of this thread is to consolidate some information on the nv4500 trans and the differences between the light duty and heavy duty models.

I understand, though I could be wrong, that the light duty is an easier swap if one is looking to put an over drive trans in their truck.

Does that imply that the heavy duty model (those made for diesel and V10s) could be used?

I also understand that if it possible there would be 'a lot" more work involved, though I have yet to see that "work" described or the term "a lot", defined.

Is it a matter of swapping input shafts, output shafts..etc.? Has anyone used the 4500 HD as a replacement for an sm465?

Consolidating some general info on the 4500 might be a good thing. Advise is always appreciated.