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The g54 has a gear drive t-case behind it. It will bolt up to the w56-c BUT the shifter rails are going to be a bit to long. The w56-c has shorter forward shift shofter rails than the g54. About a half an inch. So in order to bolt the g54 t-case to your w56-c, you would need to get the short style forward shift shifter rails installed into the g54 t-case. Then you would be set to go!
Interesting. Is it the same case with different rails then or a completely different t-case alltogether?
Thank you!Ive turned almost every bolt on my truck but done nothing more than change the input shaft seal on my trans.What exactly does swaping the rails on the cases entail? is there any fab work required? or is it a simple bolt and wrench project?Im just trying to understand what I am doing before I do it
It's going to be the exact same t-case, just different length shift linkages. Absolutly no fab work at all. Pretty much just taking the housings off the t-case, knocking a couple roll pins out of the shift rails, and swapping in the shorter rails. There are pics somewhere on the website on how do disassemble a t-case and putting it back together. And yes it's the g58 transmission that had a chain drive transfer case behind it.
I just did this g54 to w56c swap a couple of months ago. As Goldrush said, swap shift rails, and your good to go. You don't need to cut your floor, all your shifters will be in the same place. I did use the g54 shifter, because it has a different offset then the w56 ( it was hitting my t-case shifter). If your going to replace the tranny anyways, the t-case is right there, so it's not that big of a deal. Just pull the reduction box and swap the shift rails.
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