Engine/Transmission (1994 - 1998) 47RE in a 94?

[bighammer]

Am I asking for trouble trying to convert my 5 speed to a 47re auto? How much electrical crap am I going to have to deal with? Is it possible? Better to wait for an RH?



TIA

 

[bmoeller]

Too bad I don't have the money or time, but I'd swap with you if I could, if you were wanting to do that. I miss having a manual transmission.



Aside from the computer controlled valve-body, I don't think they are all that different, but can't say for sure since I have looked at one.

 

[Howard Durand]

I have a feeling that the PCM is different for the 47RE than the one you have in the 94.

Check with Bill at DTT, possibly you could use a 47RE in the 94 with one of his "Smart Controllers".

 

[Extreme1]

I think your best bet would be a swap from one truck to another. The PCM's are different as are wiring harnesses. There was a post a while back about a couple folks that did this, it was a lot of work and (if I recall correctly) one of them suggested getting a different truck instead of swapping.

 

[TSielski]

94's and 95's came with 47RH auto's, which are hydraulically controlled for the most part. Using a 47RE, would require either a new controller for a 96 - later vehicle that used the 47RE, or a custom controller.

There are a few other concerns as well. I swapped from a 47RH to a 5-speed in my 95 and haven't regretted that for a second. You will need a new Transfer case, as the 5-speed output shaft is larger in diameter than the automatic. Likewise, you will also need a new female slip yoke for your rear driveshaft as the output shaft used on the automatic t-cases is smaller. You will have to shorten and lengthen your rear and front driveshafts respectively (automatic trans is longer). You will also need the steering column linkage, and possibly a new ignition switch for the auto shifter. A trans cooler with its related plumbing is also needed.

Unless you've really had it with the manual, I'd just keep it.



Tim