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1951 Suburban Bumpers
#1416796 Tue Jul 13 2021 02:04 AM
Joined: Mar 2000
Posts: 113
J
jmmmn37 Offline OP
'Bolter
The rear bumper (and brackets?) on my Suburban is bent and cobbled up. Checking the Factory Assembly Manual, I believe that the rear bumper (face bar) on the Suburban is the same as the front one (3700438). Is this correct? If so, someone did a real "bend" job on the brackets, seeing that the short arm of each rear bracket is bent back about 3-4" from the mounting hole of my new bumper.

Has anyone had luck in bending bumper brackets--I imagine it will take a considerable amount of heat and a careful calculation to get the bend just right.

Any advice or hints?

Thanks,

Jim

Re: 1951 Suburban Bumpers
jmmmn37 #1416808 Tue Jul 13 2021 04:44 AM
Joined: Dec 2002
Posts: 4,215
Moderator - The Electrical Bay and Rocky Mountain Bolters
Not me. But i understand that a lot of the bumper brackets are made from spring steel and shouldn't be heated...much


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Re: 1951 Suburban Bumpers
jmmmn37 #1416817 Tue Jul 13 2021 12:11 PM
Joined: Jun 2001
Posts: 757
T
Bondo Artiste
Correct, the rear bumper on a panel truck and suburban from this era is just a front bumper. I'm not sure about heating the brackets, others can chime in.


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Re: 1951 Suburban Bumpers
jmmmn37 #1417287 Sat Jul 17 2021 11:51 PM
Joined: Mar 2002
Posts: 9,113
'Bolter
The bracket on the front of my 51 1 ton was bent a bit. When my body man was doing repairs after I hit a deer, he straightened it. I asked him if he used heat and he said no.


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Re: 1951 Suburban Bumpers
jmmmn37 #1417318 Sun Jul 18 2021 01:16 PM
Joined: Apr 2005
Posts: 2,841
C
'Bolter
If your truck is going to be used as a working truck then the spring steel brackets are required. The way our trucks are used in 2021 mild steel brackets are fine. We heat the strap in a forge (rosebud can be used) till YELLOW hot and then form it to the shape needed to fit the bumper and frame. A bracket on the fork lift holds bumper rigidly in place while forming is happening. All thread with nuts and washers is used to draw the brackets into final contour. Do all this before bumper is re-chromed.


Evan
Re: 1951 Suburban Bumpers
jmmmn37 #1417338 Sun Jul 18 2021 05:41 PM
Joined: Jul 2000
Posts: 1,311
G
Insomniac
I bent the stock front brackets back into shape without heat. After all, they were bent out of shape without heat. Clamp on a 2x4 and pull. This was a minor adjustment; maybe 2 or 3 inches.

For the rear, I made new brackets using 2" sq steel tubing and angle iron.

Last edited by Gord&Fran; Sun Jul 18 2021 05:44 PM.

Gord
----
1954 1/2 ton 235 4 speed
Re: 1951 Suburban Bumpers
jmmmn37 #1417383 Mon Jul 19 2021 07:23 AM
Joined: Dec 2014
Posts: 815
M
'Bolter
It's been too long since I put mine together so I can't remember for sure, but it seems I recall that although the front and rear bumpers will interchange, the rear bumper was originally thicker steel: 1/4" thick versus 3/16" for the front bumper. The thicker bumpers were also used front and rear on the 1-ton model.


1951 Chevy Panel Truck
Re: 1951 Suburban Bumpers
MiraclePieCo #1417412 Mon Jul 19 2021 05:47 PM
Joined: Oct 2005
Posts: 3,312
"Hey! I sound like Darth Vader!!
Originally Posted by MiraclePieCo
It's been too long since I put mine together so I can't remember for sure, but it seems I recall that although the front and rear bumpers will interchange, the rear bumper was originally thicker steel: 1/4" thick versus 3/16" for the front bumper. The thicker bumpers were also used front and rear on the 1-ton model.


Correct, they will interchange.

Re: 1951 Suburban Bumpers
jmmmn37 #1419925 Mon Aug 09 2021 02:30 AM
Joined: Dec 2014
Posts: 815
M
'Bolter
Although the front and rear bumpers are interchangeable, the brackets are WAY different.

I have a spare set of rear brackets for my panel. They are like gold - specific to the 1/2-ton panel and Sub (1-ton won't work), not reproduced, hard to find, and expensive if you can find them.


1951 Chevy Panel Truck
Re: 1951 Suburban Bumpers
jmmmn37 #1420345 Thu Aug 12 2021 05:05 AM
Joined: Dec 2014
Posts: 815
M
'Bolter
jmmmn37

Jim, here are pics of the AD Panel/Suburban rear bumper brackets to help you identify yours:

Attached Files
20210811_214951 (Medium).jpg (65.87 KB, 77 downloads)
20210811_214958 (Medium).jpg (67.54 KB, 76 downloads)
20210811_215009 (Medium).jpg (55.39 KB, 75 downloads)

1951 Chevy Panel Truck
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