Subframe/chassis interchangeability. - S-10 Forum
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post #1 of 7 Old 04-14-2019, 04:00 PM Thread Starter
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Subframe/chassis interchangeability.

Hi there, new to this forum.

Has anyone any experience, if gen1 and gen2 subframes are interchangeable? It started almost a year ago with a 88 2 door Blazer barn find, it has a 2.8 4x4 with no front diff and axles. Last week I bought a differential, it came with a mint 2nd gen car, that has been rolled over and had around 30k original miles on it.

As the donor car's chassis is in much better condition, than mine, the crazy idea came up, to switch the bodies, put a gen1 body on a gen2 chassis, rather than switching the diff, half axles, brakes and other stuff one by one.
Both cars are 4x4 2 doors, 1988 and 2000ish

Anyone done this before?


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post #2 of 7 Old 04-14-2019, 04:21 PM
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Re: Subframe/chassis interchangeability.

This might help some..

http://www.gmupfitter.com/publicat/p..._Truck_pgs.pdf
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post #3 of 7 Old 04-15-2019, 01:20 AM Thread Starter
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Re: Subframe/chassis interchangeability.

It's great, now I'm trying to find the same manual for gen1. That would answer all the questions. Thanks, it's very useful.
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post #4 of 7 Old 04-15-2019, 01:41 AM
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Re: Subframe/chassis interchangeability.

Well...it might come down to a tape measure and a lot of pics. I don't know of anything for a 1st gen.

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post #5 of 7 Old 04-15-2019, 02:27 AM
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Re: Subframe/chassis interchangeability.

Looking at the part numbers for the frames, they are not the same so they are not technically interchangeable. They are similar though and with some ingenuity and determination, anything is possible... so they say. Probably be more work than it's worth, but I wouldn't really know



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post #6 of 7 Old 04-15-2019, 06:57 AM
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Re: Subframe/chassis interchangeability.

There will be some differences on the front bumper mounts when using that new of a frame. Not hard to cut and weld the ends while you have the frames striped.
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post #7 of 7 Old 04-15-2019, 07:22 PM
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Re: Subframe/chassis interchangeability.

You're going to need to do some rewiring for the body harness too, keep most of the switchgear from the newer model since it is BCM controlled.




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