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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | More critical is that 53 inches seems pretty narrow to me. Where did you measure that? I always consider the most critical dimension the wheel mounting surface to wheel mounting surface (WMS to WMS). I don't recall the stock number for a 3600 but something closer to 62 inches is what I'd expect. If you have a conventional bed with fenders this will be critical. If you have a flatbed its not as big a deal but you still need to be in the right ball park.
If you get an axle that is either too wide or too narrow you will have wheel and tire fitment problems. If the spring pads are in the wrong place they can be easily moved but the overall width is not cheap or easy to change.
Regarding the alignment of the drive shaft there are limits as to how far universal joints should be asked to flex but any axle with the pinion near the center should be close enough.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | |
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