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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Frame dimensions

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Old Jun 26, 2012 | 09:26 AM
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Frame dimensions

what are the dimensional frame differences of, say, a 49 F1 and a 51 F1?
 
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Old Jun 26, 2012 | 09:30 AM
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None that I'm aware of. They're interchangeable from a practical standpoint.
 
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Old Jun 26, 2012 | 09:31 AM
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No frame differences. Only difference is just in the VIN stamped into the frame.

A slightly change came in 52 when the front motor mount brackets were different design.
 
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Old Jun 26, 2012 | 09:19 PM
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Found lots of great dimensions for F1's on this forum. Not sure how to post it, search for Julies Cool F1, I hope that will help. She posted some old Ford forms several years ago.
 
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Old Jun 27, 2012 | 04:48 PM
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Originally Posted by farmerbobb
Found lots of great dimensions for F1's on this forum. Not sure how to post it, search for Julies Cool F1, I hope that will help. She posted some old Ford forms several years ago.
Julie is not a she, but a he. Let's not go into the details again.
 
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Old Jun 28, 2012 | 08:16 AM
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Frame dimensions

This may help you. According to page 196 of the Ford Shop Manual 1949-1951 F-1 to F-3 pickup frames have the same dimensions.
 
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Old Jun 28, 2012 | 09:11 AM
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The only difference between an F1 and F2-F3 frame is the length.
 
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Old Jun 28, 2012 | 09:59 AM
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Originally Posted by 51PanelMan
The only difference between an F1 and F2-F3 frame is the length.
Don't they also have different crossmembers? And is the gauge thickness of the steel thicker on the heavier trucks? I know there's some differences besides length.

Bottom line is, they are not interchangeable. F1 is it's own unit.
 
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Old Jun 28, 2012 | 11:17 AM
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Frame dimension differences?

Originally Posted by 51PanelMan
The only difference between an F1 and F2-F3 frame is the length.
Yes Ilya you are certainly correct . . . thanks. I was focused on Lukas's original question. But I am interested in 52 Merc's observation about cross members, etc. F-1 to F-2. I'm trying to find a rack and pinion steering gear for my F-2. All the parts guys tell me that theirs won't fit but no one can tell me why. Obviously anything can be made to fit it just depends upon how many modifications need to be done. Has anyone done this or do they know why an R&P gear for an F-1 would not fit an F-2?

Sorry Lucas . . . I don't mean to hijack your thread but it is kind of on topic.
 
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Old Jun 28, 2012 | 09:01 PM
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Originally Posted by petemcl
Yes Ilya you are certainly correct . . . thanks. I was focused on Lukas's original question. But I am interested in 52 Merc's observation about cross members, etc. F-1 to F-2. I'm trying to find a rack and pinion steering gear for my F-2. All the parts guys tell me that theirs won't fit but no one can tell me why. Obviously anything can be made to fit it just depends upon how many modifications need to be done. Has anyone done this or do they know why an R&P gear for an F-1 would not fit an F-2?

Sorry Lucas . . . I don't mean to hijack your thread but it is kind of on topic.
They use the same solid beam axle, same spindles, drag links, etc..., so I don't see why not. Differences are 11" drums for the F1, 12" drums for the F2, plus the wheel bolt pattern. An optioned 9 leaf spring pack vs. the normal 8 leaf spring pack shouldn't make much difference if any. I'd be willing to bet it's their normal "disclaimer".
 
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Old Jun 28, 2012 | 09:48 PM
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Originally Posted by havi
They use the same solid beam axle, same spindles, drag links, etc..., so I don't see why not. Differences are 11" drums for the F1, 12" drums for the F2, plus the wheel bolt pattern. An optioned 9 leaf spring pack vs. the normal 8 leaf spring pack shouldn't make much difference if any. I'd be willing to bet it's their normal "disclaimer".
Thanks Havi that is my thought too. I think that these companies just have not done it. I was looking at the No Limit set up that Dr G posted in 2009 (https://www.ford-trucks.com/forums/911380-no-limit-rack-and-pinion-kit-for-straight-axle-report.html#post8243811).

It looks pretty straight forward to me. He has 8 leaf springs and it looks like he has good clearance but I think that he has a '53 F-1 (see the large rubber stop). A little different than my '50 F-2. To complicate things more I am installing Posie Dual-Flex springs on the front which will give me a 2-3" drop. I'll have to do some measuring tomorrow . . . providing the heat takes a break. It was 97 deg here today !!!
 
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Old Jun 29, 2012 | 12:55 AM
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Originally Posted by 52 Merc
Don't they also have different crossmembers? And is the gauge thickness of the steel thicker on the heavier trucks? I know there's some differences besides length.

Bottom line is, they are not interchangeable. F1 is it's own unit.
Yes, Wayne, to be specifically correct, which I should have been, the F2-F3 frames do have different xmembers than the F1 frame. The transmission xmember is different, as well as there's at least one or two more xmembers because of the length. I don't believe that the gauge thickness of the steel in the frame was different. I believe that it began to change with the F4 model.
 
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