anybody know the GM part numbers for the 5-pinion planetaries, HD sun shell, drum, sprag, etc that (I think) are used in the 4L65E (e.g. Escalade etc), that are backwards compatible with the 700R4?

I remember reading somewhere that if you're rebuilding a 700R4 and want to increase its capability, there were some newer GM "hard parts" used in higher-capacity 4L60E's, 4L65E's that are backward compatible. I think these are the same parts sold by some of the aftermarket trans vendors, but was wondering if somebody had the GM part numbers?

Thanks!

 

I do not know the part numbers, but save your money as the 4 pinion planetaries hold up fine. I use them in all of my nine and ten second builds, and I have never had one break.

 

I usually put 5 pinions in when i rebuild them because i had a 4 pinion one come apart in my car that just has a 305 with tpi on top. not that its a normal thing, but it makes me feel better, and i had to buy one anyway. but anyway I'd just talk to pro built and get everything from there and have it chryo'd and the whole 9 yards it's worth it