Quote:
Originally Posted by special-K
Unless you are going for some crazy power the 12-bolt will be fine. They've run these trucks all these years with everything from a 250 to 454s and 6.2 diesels. You'll be fine. gMC did put Dana 60s in some 1/2 tons,but those were back in the 6-lug days. A Lincoln 9" rear with disc brakes is a hot swap. Those have 5 on 5 pattern. I want to say two more things. One is welcome to the board! the other is, now that you have a GMC and you're on the most informed GM truck site on the internet, you need to get sed to calling your truck a Fenderside. That's what GMC called them. Chevys are Stepsides.
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Wow I think I had heard about the "fender-sides" before but had completely forgotten about that.
I have seen GMC's with 6 lug diffs that had 10 bolts on the cover. I wonder if that could have been a Dana?