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63 gmc 2500 rear shocks? #1321834 Wed Aug 14 2019 01:52 PM
Joined: Mar 2019
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glenns towing Offline OP
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Im in the process of putting together a truck, "Frankenstein" is the name it acquired.. lol. Anyhow the rolling chassis I got was from a fire co water truck. No body with the chassis unfortunately. But I also noticed that there were no shocks on the rear, nor a crossmember or frame mount to mount then to?? The brackets are still on the differential housing tho. My question is, Whats supposed to be there? Or is this common?

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321838 Wed Aug 14 2019 02:57 PM
Joined: Dec 2006
Posts: 134
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Elderly Iron Offline
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Common? Yes, given the application. You'll probably want to add an upper mount, since it's not a fire truck anymore!

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321894 Wed Aug 14 2019 11:06 PM
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glenns towing Offline OP
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That's what I figured. Any ideas on an upper mount?

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321929 Thu Aug 15 2019 04:54 AM
Joined: Dec 2006
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Elderly Iron Offline
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Wrecking yard. Find a bad frame on a half ton and torch the crossmember out with the frame rails and rivets in tact after you measure the mounting location. Take it home and get the rivets out. You'll likely find that the rivets are a bit larger than 3/8. Try a 10mm or 7/16 in the hole. Mark your hole location and drill! Install with grade 8 bolts. Some will just measure an existing truck and weld some channel or angle iron in its place and attach some shock mounts. Not recommended, though. Always bolt instead of weld. Welds create stress and crack.

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321941 Thu Aug 15 2019 11:37 AM
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glenns towing Offline OP
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Thanks for the info. I have another frame with shock crossmember but wasn't sure if there was a feasible alternative to that. I wasn't sure on welding 1 in, but will avoid that now..

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321963 Thu Aug 15 2019 03:15 PM
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Elderly Iron Offline
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You can duplicate it and build your own crossmember. Just bolt it in, though.

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1321969 Thu Aug 15 2019 03:56 PM
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glenns towing Offline OP
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Gotcha

Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1322172 Sat Aug 17 2019 02:07 AM
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glenns towing Offline OP
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Any chance you think on finding something like the bracket in da pic? probly easier to fab it up I guess?

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Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1322865 Wed Aug 21 2019 05:05 PM
Joined: Jul 2014
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1Ton_tommy Offline
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Back in the day that I worked in truck shops we did much frame work. Heavy truck frames are often bolted together rather than riveted. Many frames and replacement frame rails had a caution sticker that ominously said "Do not drill flanges or weld to rails," a caution I have observed since. In retrofitting my 1-ton for rear shocks I made brackets out of spare spring leafs bent at a 90 with a couple of bolt holes torched in them. Then I found a convenient bolt hole already in the frame and bolted on the bracket. Drilling bolt holes in truck frames is not fun unless you have a magnetic drill press for the purpose. On aluminum frames we used a clamp affair to hold the drill. One caution is to make the bracket to take a shock with an eye on top rather than a stud. Your choice of shocks will be much greater. The AD 1-ton RPO for shocks used a forged bracket that riveted or bolted to the frame and used shocks with eyes top and bottom. Keep an eye out for that bracket.


51 3800 PU, 55 235 (w/cam, headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.
Re: 63 gmc 2500 rear shocks? [Re: glenns towing] #1322883 Wed Aug 21 2019 06:33 PM
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glenns towing Offline OP
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Will do and thanks for the accurate info.

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