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Click on image for the lowdown. 
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| | | Forums66 Topics128,068 Posts1,055,882 Members48,428 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Jun 2008 Posts: 106 Shop Shark | | Shop Shark Joined: Jun 2008 Posts: 106 | Are there any major differences between the two?
Thanks in advance | | | | | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | The front xmember is completely different. GMCs of that vintage have the model and production number stamped on the frame. I'm not sure if the rear axle mounts differently between chevy and gmc... I think one mounts over the springs, and one under, but not sure as to which is which. Of course that could be a 1/2 ton 3/4 ton quirk as well. | | | | | Joined: Nov 2005 Posts: 1,048 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 1,048 | Not sure of differences between Chevy and GMC, but half ton and ¾ ton frames are different. The ¾ is narrower under the bed. | | |
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