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Old 02-23-2018, 12:47 AM   #1
dragonball98312
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73 woodbed help

Hi there. I recently picked up a 73 c20 with the optional wood bed. My wood needs redoing and my cross braces or what ever they are actually called are rusted too bad to clean up. Since this is the only 73 up one ive seen that isnt step side im concerned i wont be able to find replacement parts. My question is how different would it be from parts used on the 60-72 long beds with wood floor?
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Old 02-23-2018, 01:50 AM   #2
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Re: 73 woodbed help

I ran into the same issues with rusty cross sills when restoring the wood floor in Dad's '77 GMC.

With the exception of the rear cross sill (back by the tailgate), the 67-72 cross sills can be used as suitable replacements. The plank widths are different so the hole spacing in the cross sills is different. But when I contacted Mar-K, they were able to supply some 67-72 style cross sills without any holes drilled in them. So (using an old one as a template), I was able to drill them out to the 73-80 hole spacing.

For the rear cross sill (and many of the special flange pieces around the perimeter of the floor), we had a local metal fabrication shop make replacements using the old rusty pieces as templates. But I think it would be possible to purchase a 73-87 rear cross sill that's meant for the more common steel floor and modify it to work with the wood floor. That would basically involve cutting out a section across the leading edge, flipping it over, and re-welding it back in to create the recessed notch that the ends of the planks sit down into.

The metal strips that go between the boards are available through Mar-K with the holes pre-punched for the 73-80 wood fleetside beds.
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Old 02-23-2018, 11:13 AM   #3
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Re: 73 woodbed help

Thank you. Would it be possible for you to post pictures of the 77s wood floor?
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Old 02-23-2018, 11:40 AM   #4
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Re: 73 woodbed help

LMC sells the kit you can buy as many of the cross rails as you want as well as the wood hold downs. What I did was I bought only two of the cross sills because I was able to weld in patches on the other cross rails. and I bought the cheap unpainted wood spacers. I was planning on bedlining the inside of the bed and I rhinolined the spacers.. I made my own wood and used galvanized carriage bolts to hold things together also coated the top of the carriage bolts with rhinoliner this is what I cam out with
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1979 Chevrolet C20 LWB
1980 Chevrolet C10 SWB
1998 Chevrolet K2500 LWB
1971 Chevrolet Monte Carlo
1966 Ford Mustang
2018 Subaru Forrester (wifes ride)
2014 Ram Bighorn SLT 4X4 Longbed Diesel
1992 Ford Superduty flatbed tow truck
2004 Dodge reg cab swb 2wd
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Old 02-23-2018, 12:07 PM   #5
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Re: 73 woodbed help

Quote:
Originally Posted by old Rusty C10 View Post
LMC sells the kit you can buy as many of the cross rails as you want as well as the wood hold downs. What I did was I bought only two of the cross sills because I was able to weld in patches on the other cross rails. and I bought the cheap unpainted wood spacers. I was planning on bedlining the inside of the bed and I rhinolined the spacers.. I made my own wood and used galvanized carriage bolts to hold things together also coated the top of the carriage bolts with rhinoliner this is what I cam out with

That turned out really good. Similar to how i envision mine looking someday. Yours is a short bed stepside tho. Easy enough to find parts for, mine is a long bed fleetside, alittle more tricky to find parts for
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Old 02-23-2018, 05:16 PM   #6
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Re: 73 woodbed help

Quote:
Originally Posted by dragonball98312 View Post
Thank you. Would it be possible for you to post pictures of the 77s wood floor?
I had some pics in this old thread but they're no longer viewable thanks to a certain photo hosting site --> http://67-72chevytrucks.com/vboard/s...d.php?t=376467

Anyway, here are a few of those pics ... before, during, and after:
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Old 02-23-2018, 05:20 PM   #7
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Re: 73 woodbed help

And a couple more during & after more pics:
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Old 02-23-2018, 06:03 PM   #8
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Re: 73 woodbed help

Wow that turned out beautiful. Was this the piece you had to have a shop reproduce? Pretty sure mines savable. I ment the pieces that go between the planks, most of mine cant be saved
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Old 02-23-2018, 06:12 PM   #9
ray_mcavoy
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Re: 73 woodbed help

Thanks! Yes, that rear cross sill by the tailgate is one of the pieces we had to have reproduced by the local metal shop. We also had to have them remake many of the wide flange pieces that go around the perimeter of the bed floor (where the wood meets up with the bedsides & inner fenders).

We had to replace those metal strips that go between the planks too. Fortunately, Mar-K does offer those with the holes all pre-punched to fit the 73-80 long fleetside applications.
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Old 02-23-2018, 06:46 PM   #10
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Re: 73 woodbed help

the longbed pieces are available at LMC
http://www.lmctruck.com/icatalog/cc/full.aspx?Page=35
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1979 Chevrolet C20 LWB
1980 Chevrolet C10 SWB
1998 Chevrolet K2500 LWB
1971 Chevrolet Monte Carlo
1966 Ford Mustang
2018 Subaru Forrester (wifes ride)
2014 Ram Bighorn SLT 4X4 Longbed Diesel
1992 Ford Superduty flatbed tow truck
2004 Dodge reg cab swb 2wd
2014 Harley Davidson Heritage Softtail


"If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board"
http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!)


PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport

Live each day to the fullest.. you never know when fate is going to pull the rug out from under you...
I hate cancer!!
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Old 02-24-2018, 12:57 AM   #11
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Re: 73 woodbed help

Quote:
Originally Posted by old Rusty C10 View Post
the longbed pieces are available at LMC
http://www.lmctruck.com/icatalog/cc/full.aspx?Page=35
Long bed stepside yes, mines fleetside tho you might be on to something, im sure alot of those parts could work, thanks for making that an option as i have a lmc order in my future
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