Bed interchangablity

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Ruckin69
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Bed interchangablity

Postby Ruckin69 » Wed Jan 03, 2018 5:56 am

Will a 72 F100 bed fit a 78-79 CC?

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jamesdfo
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Re: Bed interchangablity

Postby jamesdfo » Wed Jan 03, 2018 9:30 am

1967-72 are nicknamed "Bumpsides", because the bodyline that runs all the way down the side is a V shaped bump.

1973-79 are nicknamed "Dentsides", because the bodyline is concave, like a dent:)

So, no you wouldn't want to bolt a Bumpside box onto a Dentside, it would be pretty obvious it's incorrect.

Bumpside
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Dentside
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HTH
James

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Re: Bed interchangablity

Postby Ruckin69 » Wed Jan 03, 2018 10:43 am

Good info and point well taken. But out of curiosity will they still work by putting a bump side on a dentside and regards to holes and dimensions?

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Re: Bed interchangablity

Postby Bullistik8v92 » Wed Jan 03, 2018 5:41 pm

Ruckin69 wrote:Good info and point well taken. But out of curiosity will they still work by putting a bump side on a dentside and regards to holes and dimensions?


Some will interchange yes. It depends on which year bed and frame you are going to use. During the 73-79 years the frame width changed. However, even if you get a wide frame bed, it will still physically fit on an older truck (even a bump side) you'll just have to drill new mounting holes in the bed.

The long bed that came with my 77 crewcab project truck was off a 79 and they drilled new holes to fit the High Boy narrow frame.

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Re: Bed interchangablity

Postby phlegm » Tue Jan 30, 2018 2:08 pm

My truck is a '75 body (narrow frame 34") on a '78 frame/chassis (wide frame 37").
Whoever did the body swap welded on some small tabs to bring the mounting point in 1.5" per side.
It caused problems with the gas tank as they hammered in the corners and that caused it to break/rust.
I've cut off those tabs now and replaced that gas tank with a new one.

But it can be done...
IMG_9545_zpsxu0bisum.JPG


One way that this question becomes very useful is when thinking about using an older stepside on a newer frame, they have the same styling from '53-79.

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Re: Bed interchangablity

Postby RustyGold » Sat Apr 21, 2018 2:33 pm

My question is what year did the frames go from 34" to wider. Was it late 77 or 78. ? Thanks
75 Crew 4x4
78 f250 460 4x4

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PACrewCab
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Re: Bed interchangablity

Postby PACrewCab » Tue Apr 24, 2018 5:10 am

Mid 77 as far as I know.
Andy
1996 F350 crew cab, Powerstroke, automatic
1965 Ford Mustang, 289, automatic
1964 Ford Galaxie 500, 352, automatic
1968 Ford Galaxie 500, 302, automatic

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Re: Bed interchangablity

Postby Rheaghen » Tue Feb 26, 2019 11:14 am

I'm facing this same problem now. Does anyone have advice for the simplest approach to relocating the cross members in the bed and drilling/broaching the square bolt holes?
1974 F250 CC Short Bed - 2WD 460 auto
(comming soon) 1974 F250 CC Short Bed - 4X4 p-pumped Cummins 12v, NV4500

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Re: Bed interchangablity

Postby jamesdfo » Thu Apr 11, 2019 7:52 am

Rheaghen: Rather than deal with making a square hole for "Carriage Bolts", another approach might might be to use the bolts off late model Ford trucks, which have a T55 Torx in the center of the heads, you would need to source bolts, as well as the metric clips that go on the frame rails.(Pick'n'Pull, or BNIB from dealer)
I suppose you could also just go to a nut/bolt house and get hex nuts instead of the clips, but you'd be losing out on the best part, being able to bolt the box down without needing TWO PEOPLE:)

James

Rheaghen wrote:I'm facing this same problem now. Does anyone have advice for the simplest approach to relocating the cross members in the bed and drilling/broaching the square bolt holes?

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Re: Bed interchangablity

Postby Rheaghen » Mon May 13, 2019 4:42 pm

Hmm... I was thinking I'd create some cross members from square tube with some fasteners welded into them, bolt them to the frame before placing the bed, remove the cross members from the bed all together, lay the now crossmember free bed down on the tube members, line it all up, tack weld when satisfied. This would alleviate allot of measuring as well as having a cleaner surface.... in theory at least :lol:
1974 F250 CC Short Bed - 2WD 460 auto
(comming soon) 1974 F250 CC Short Bed - 4X4 p-pumped Cummins 12v, NV4500

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