Click on image for the lowdown. 
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| | | Forums66 Topics128,078 Posts1,055,936 Members48,430 | | 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 with Ads! Again, thanks! | | | | Joined: Oct 2006 Posts: 4,983 Master Gabster | | Master Gabster Joined: Oct 2006 Posts: 4,983 | It looks like something the PO put up there, not a factory job.
~Jim
| | | | | Joined: Sep 2011 Posts: 116 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 116 | I'm going to guess that it is the mounting location for something called a "kuba stabilizer". I've got a late 55 cab that was titled as a 56, which has these stabilizers on it. These were new for the 56 model year from what I've found. The lower mounts for these were on top of the frame rail over the front cross member. I don't know if these were on the 57s though. 1955 Second Series GMC"Done - A 50 Year Journey"Follow in the DITY-- No one said it was going to be easy
| | | | | Joined: Mar 2010 Posts: 118 'Bolter | | 'Bolter Joined: Mar 2010 Posts: 118 | So I'm assuming i don't need it? It doesn't look like a botched job by the PO by looking at the way its mounted and made that's why I ask. But if it's not needed I plan on cutting the bolt out and not put it back on... | | | | | Joined: Sep 2011 Posts: 116 'Bolter | | 'Bolter Joined: Sep 2011 Posts: 116 | I'm crappy with this computer stuff, but if you go to a thread on page 3 of the general truck discussion you will find a thread "serial numbers", on page one of the thread is a response from tclederman, with a link for "that are unique to 55 or to 56 Blue Chip GMC trucks", check the booklet on the 56s on the left of the page, go to page 13 and it shows what you might be missing 1955 Second Series GMC"Done - A 50 Year Journey"Follow in the DITY-- No one said it was going to be easy
| | | | | Joined: Dec 2005 Posts: 2,557 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 2,557 | Here is a link to the page rbs56 is talking about. manuals Tim 1951 3100 Chevrolet1951 Chevrolet Suburban CarryallImage"A house is built with boards and beams. A home is built with love and dreams." "Look deep before you leap !!!" / "Everything is Everything" "If I say a mouse can pull a house, hitch him up"
| | | | | Joined: Jun 2005 Posts: 4 New Guy | | New Guy Joined: Jun 2005 Posts: 4 | It is factory installed. The two smaller bolts on the outside hold the reinforcing plate in position. The two larger bolts in the center are where two large tubular braces bolt on. The braces connect from the top of the cowl to the frame at the front motor mount. There are two smaller bar braces also. My 57 100 has these braces, and the reinforcing plate. Ed G. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Here is the page from the "NEW FOR 1956 GMC Models and Features" brochure that shows and describes the "kudu stabilizer" (note the spelling) . | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Tim, you come up with the most random bits of knowledge and the factory documentation or publications to back it up. Please keep it up!
Jeff
Last edited by rustednuts; 11/20/2011 6:25 AM. Reason: because cletis is rude
| | | | | Joined: Apr 2010 Posts: 362 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 362 | Cody. There's a guy here in Richmond that has a 56 GMC and it has both of those on it. Looks wierd and I can see some taking them off because they look like they would get in the way of installing a V8. His has the kudu bar and the shock on the end of the axel. I'd hate to have to put in king pins on that axel.Larry
58 gmc 100 with 350 sbc
| | | | | Joined: Feb 2002 Posts: 2,893 Socket Breaker | | Socket Breaker Joined: Feb 2002 Posts: 2,893 | looks like the horn rack of a kudu, which is prolly where they got the name.
Interesting.
-W | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Cody. There's a guy here in Richmond that has a 56 GMC and it has both of those on it. Looks wierd and I can see some taking them off because they look like they would get in the way of installing a V8. His has the kudu bar and the shock on the end of the axel. I'd hate to have to put in king pins on that axel.Larry The picture in the sales brochure shows that Kudu Stabilizer "rack" in place with a V-8 engine (I would guess - maybe a V-6?). | | | | | Joined: Mar 2010 Posts: 118 'Bolter | | 'Bolter Joined: Mar 2010 Posts: 118 | Interesting, thanks everybody for the info. I see the reasoning for the stabilizers, but being that I dont have them and im not necessarily going for completely stock, I dont think they're going back on. | | | | | Joined: Apr 2010 Posts: 362 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 362 | That bar from the way it mounts looks kind of like it was there to take care of some of the weight of the cab front. It started on the firewall and ended on the frame near the radiator.Larryw
58 gmc 100 with 350 sbc
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