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Old 04-17-2009, 11:18 PM   #9
spinning wheels
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Join Date: Sep 2001
Location: Hacienda Heights, California USA
Posts: 474
Re: 1972 GMC Custom Camper Towing Capacity

I tried to find a towing capacity but only found load capacity chart.

These trucks had 3 different rear axles. So, it would be hard to say which one came on your truck. I have the same truck, mine has 4:10 gears and has the corporate rear differential. Equipped with a 350/350 drivetrain setup.

I think your rear bumper was stock, as mine is also welded to the frame. I hate the look, but when I towed a car trailer with it, I figured that bumper wasn't going anywheres.

The heaviest car I towed, was my '70 Chevy Camaro. Believe me, I noticed it behind me. This old truck struggled up one grade. I figure, the Camaro alone weighs approximately 3800 lbs. Plus the car trailer.

Hope this info helps.

Here is a pic of the rear step bumper.
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'72 GMC custom camper 350/350
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