Hummer H3 Trans buff for 3.7

[GreatDaneHummer]

I am looking for some help finding any parts to buff my trans for the 3.7? Currently I think the trans is not able to hold up well enough for a lot of stop and go 1-2 shifts and would like to maybe do a rebuild kit but only if I can make it better and stronger than OEM.

Thanks!

 

[rsc]

Look into a PATC Raptor transmission if you want strength in a 4L60E. They also sell several lower levels of upgraded transmissions. If not buying from PATC, I would say to do all the durability updates, then use quality bits like a Beast sunshell, heavy duty sprag, Raybestos clutches, steels and bands and a TCI shift kit w/Corvette servo. That should get you a nice strong setup for big tires or towing.

 

[4speedfunk]

If you do a tranny swap....keep your original nearby. The pan & possibly the valve body are special for the H3 chassis and are required for driveshaft clearance. I doubt if an aftermarket tranny supplier is aware of this and you will probably have to rob some parts off your old one.. Another reason to rebuild the original rather than do a swap.