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Re: 52 3600 Bed Assembly Help
Michael DB #1319515 Sun Jul 28 2019 02:28 AM
Joined: Dec 2005
Posts: 409
Shop Shark
Mike, It looks like you have a board kit drilled for a 1/2 ton GMC long bed. 1/2 ton and 3/4 tons had the same bolt spacing front to back but different frame widths, 1/2 ton frames being a lot wider as mentioned in the previous post.

Regarding the angle strip, the original angles extend over the top of the rear sill for reasons nobody seems to know. At the front, they can't extend all the way to the front panel because that would interfere with the bolted flange of the front panel which is about 7/8" wide. That rear hole in the angle strip should line up exactly with the corresponding hole in the rear sill.


Re: 52 3600 Bed Assembly Help
Michael DB #1319518 Sun Jul 28 2019 03:51 AM
Joined: Jan 2019
Posts: 9
New Guy
Thanks for the info Mar-Ktech. Spent some more time out in that garage again trying to figure it out, did not devote a lot of time to it since I had other stuff to take care of but I am pretty much of the opinion that something went wrong somewhere. When I found some pictures of at least 3 1953 3/4 ton 3600s it appeared that no holes were drilled in the 4 1/4 inch boards and had them in the adjacent 7 inch boards, waiting to here back from the manufactured of the boards.Thanks for the info on the angle strips, I think I may have to cut mine back off since I have two adjacent holes in the strips that should be on the forward side of the bed, currently I have them to the rear side. I have cross sill the has a piece welded on at either end at a 90 degree that is about 5 inches long and has holes spaced 3" apart on the side of the face that line up with some holes in the bedside directly in line with the second stake pocket, I can only guess this is the sill that is the next one back behind the front panel. I just wonder where GM documents all these items ? I understand that there is no bed details in the factory assembly manual, at least that is what one person noted on Amazon.


Re: 52 3600 Bed Assembly Help
Michael DB #1319524 Sun Jul 28 2019 04:47 AM
Joined: Apr 2002
Posts: 1,791
Fox Offline
A teacher, but always an apprentice.
The elusive GMC 1/2 ton long bed! Aaaaahhhhhhhhhh....

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1951 GMC 9430 1 ton dually—-Shiny!

1970 Chevrolet C10 - Grandpa’s- My first truck.—in progress to shiny
1972 Chevrolet C20- rusted
1970 Chevrolet K20 Suburban—rusted.
1950 Chevrolet 1300- in progress to shiny.

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1951 GMC 9300
1951-GMC 9430
1951- Chevrolet 1300
Re: 52 3600 Bed Assembly Help
Michael DB #1319532 Sun Jul 28 2019 11:47 AM
Joined: Apr 2005
Posts: 9,291
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Michael, Mar-Ktech is the recognized expert. His company has been making and selling Bed parts for many years. Go to their website and look through the Tips section for diagrams and info. Good luck.🛠

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