Replace or Rebuild transmission?????
 

hey guys,
89 GMC 4x4 with 700R4.
I have two questions really.
Im pretty well convinced that my tranny is junk...Wont go into 3rd gear.

1)Is it worth rebuilding or replacing my tranny???

2)AND, is there a better tranny to go too?????? instead of staying with a 700r4.

Has anyone switch to a different tranny??? Anybody had a similar situation???

Any help would be appreciated.

Any thoughts?? Anybody?

Or is this asking to much??

Depend what you do. Are you pulling or doing it for performance to be faster?

Well i mainly do muddin with the truck, so about 5 or 6 times a year for 8 hours each time the gas pedal is to the floor. So yes it's mainly performance, I want something i can beat on and wont blow up everytime i take it out.

Now i've been talking to a few guys and they say go to a TH400 or TH350, but the tranny shop i go too says that would be a mistake.

Because the gear ratio for 1st gear in the TH's is way to high for what i am doing, something like 2. somethin to 1. But the 700R4 has kinda a bull low 1st gear something like 4.somethin to one.

So in saying that, if that is true. Why are so many guys saying to go to a TH??

Keep the 700R4 for sure! Just have yours rebuilt. There are plenty of performance transmissions shop that can make yours handle a bunch of horsepower. It is geared lower which will help you mudding and has the overdrive for on the street. To me it's a no brainer!

Well after talking to the tranny shop and you guys, im gonna get the 700R4 rebuilt fursure. After finding out what the specs are with gearing i am better off with the 700R4.

But what has me puzzled, is why so many guys recommend going to a TH??...

Looking at it now, it doesn't make sense to go to a TH.