Ok, I have experience with the Transgo TFOD Jr kit for the 46RE, but know almost nothing about Sonnax. It's funny that on DF, Sonnax is all that's preached whereas on the *other* major Dodge forum, the Transgo kit is king.

So, which is better and why?

 

You should ask blown287, he's running the sonnax as well as some other guys....

 

Well if your talking about the sonnax sure cure kit, I dont think it is a shift kit it is just a couple parts that are known to go wrong on our trannys, where as the transgo TFOD jr. kit is a shift kit.

Best person to ask would be Montec,

 

I don't know wich. I only go by what i read. I don't mess with any power adds on my truck. It's a truck, if i wanted to go fast i would have bought a sports car or something like that!!!

 

I am a dealer for trans parts the snx sure cure kit is a valve body update with snx valves the tfod jr is a shift kit which I probably sell 10 to 1 for other makers such as superior

 

Interesting. So the Sonnax kit is a "problem solver" of sorts and the Transgo is a shift kit AND "problem solver" as well. Is that a good assessment?

 

The kits are basically identical. From what I understand the only difference is the Transgo kit you drill some larger holes in a couple of placed that the Sonnax kit doesn't. Thus the Transgo kit with the bigger holes oils the clutch plates better which allows them to last longer but at the expense of feeling a much harsher shift.

Someone will correct me if I'm wrong. Aims did a DIY one the Sonnax and explains the differences in there. From what I know, he hasn't had any problems at all with the Sonnax

 

Wouldn't say the transgo gives a much harsher shift, but it is firmer and quicker which translates to longevity.

I know almost nothing about the Sonnax kit so that's why I was askin. I'm wanting to eventually swap in an NV4500 because I'm an auto h8tr. But for now, I figure I might as well install a cheap problem-solver/shift-kit on the next pan drop, since that swap ain't gonna be for a while. Already got the auxilary cooler so I'm set there.

 

Aims would be more than happy to tell you how big of PITA the install is. Unless your tran savy I would be ready to pay for the lack of knowledge.

 

Its a puzzle, that's for sure. Taking notes and pictures is an absolute must if you're a first timer in there. Note the position of all bolts, springs, and especially check *****. Read the directions at least three times, and just before you do another step, check it again and make sure you aren't putting a part in backwards.

Give yourself an entire weekend to do it. If you rush, you'll end up with a FUBAR valvebody and trans in the end.

I recommend using giant white trash bags as a table cover to work on, and gallon zip lock bags to put parts in on disassembly. It really helps you to find lost parts and keep parts that go together, together. Also I'd use a sharpie to label the bags and note any odd steps you had to take to get a part off or how to route a specific part.

and be prepared to cuss, a lot.