Will GM 200r4 work with factory floor shift location?
After thinking about the 2004R swap I didn't want to use the GM trans cooler lines then downsize to the mopar fittings, The mopar fittings are 1/8" pipe in the transmission and in the radiator. To make things worse the mopar fittings have a much smaller opening than the GM fittings/line. Here you see the Mopar trans/radiator fittings: First Pic....
Then we have the GM tranny fitting...second pic
You can not adapt the GM fitting to the Mopar fitting unless you use about 3 or 4 adapters which makes the cooler lines look bulky and awkward. I went to a specialty shop that sells every type of fitting and adapter and they still had to use three additional adapters to make it work. So I got mad and decided to cheat!!! I am a machinist and after thinking about it for a while I checked the size of a 1/8" pipe tap drill. Then I checked the size of the other end of the GM fitting. I came to the conclusion that I could drill and tap one end of the GM fitting to make it connect to the 1/8" pipe fitting. The male to male 1/8" pipe ID is almost as large as the GM tranny line where the Mopar 1/8" pipe fitting is much smaller (don't ask me why??) see pic Number 3, Mopar on right. The 2004r requires more fluid transfer to keep the fluid cool so I didn't want to restrict the flow with the smaller Mopar fittings/line. I used my 1/8" pipe tap to make threads inside the GM fitting (pics 4 and 5). After I threaded the GM fitting and screwed and tightened the 1/8" pipe (male to male) into the Gm fitting (pics 6 and 7), I took them to my radiator man and had him silver solder the connection to guarantee they would never leak. It only cost 10 bucks to make the special fitting. Now all I need to do is screw the 1/8" pipe into my Mopar radiator and attach the GM line (second to last pic) This same GM line screws directly into the GM tranny fitting which offers a larger 5/16" line (pic 9) and more flow to keep your tranny cool.
I had struggled with this problem for a long time because I didn't want to use all the adapters to make it work and still have the restrictive Mopar fittings in the lines. I also didn't want all those bulky adapters sticking all over the place. This way it makes it simple, I screw my adapter into the radiator and use the GM lines from the tranny to the radiator, then to the trans cooler, then back to the tranny. More flow, cooler trans fluid and cleaner install!!!!
Treblig