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1961 - 1963 F100 Unibody 1961, 1962 and 1963 Ford F100 Unibody trucks

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Old 10-19-2013, 04:06 AM
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What to look for?

I have spent hours looking through this forum, but I havnt found a thread on what to look for when buying a unibody. Im not saying there isn't one here, I just havnt been able to find it. I have never looked at one up close and personal. Now I have the bug to own one. Im not concerned with drive train. I have owned antiques before and right now have a 67 galaxy. Just please tell me what I need to look out for when it comes to body. I have seen some talk about torque box, cab mounts and rust in floor pans and the area just below the bottom door hinge. I live in northeast Arkansas and just don't see to many of these around here.

Thanks,
Jeff
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Old 10-19-2013, 11:42 AM
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The areas you mention are of primary concern.

The torque box is a sheet metal stamping at the rear of the cab under the bed floor that ties and stiffens the center of the truck to prevent flexing. This is extremely difficult to fix as it is a body off frame fix. The rear cab skin, cab floor and this box all tie together in a multi layer unit.

Cab mounts can be fixed. not super critical.

The model 66 lower hinge pocket and cowl are the same stampings as a standard Model 81 cab. Lots of rust in these area again requires extensive rebuilding of the multiple layers. The outer pillar skin is available aftermarket.

I only buy unis as parts trucks if the torque box is shot.

Also make sure it has the correct doors. no dog leg on uni doors.

Garbz
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Old 10-19-2013, 10:16 PM
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Quote:
Originally Posted by garbz2 View Post
The areas you mention are of primary concern.

The torque box is a sheet metal stamping at the rear of the cab under the bed floor that ties and stiffens the center of the truck to prevent flexing. This is extremely difficult to fix as it is a body off frame fix. The rear cab skin, cab floor and this box all tie together in a multi layer unit.

Cab mounts can be fixed. not super critical.

The model 66 lower hinge pocket and cowl are the same stampings as a standard Model 81 cab. Lots of rust in these area again requires extensive rebuilding of the multiple layers. The outer pillar skin is available aftermarket.

I only buy unis as parts trucks if the torque box is shot.

Also make sure it has the correct doors. no dog leg on uni doors.

Garbz
Could some one post a pic of the troque box?
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Old 10-20-2013, 02:47 PM
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Upper shot of a short bed. This has the bed floor removed



Underside shot of a pristine short bed



Garbz
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63 F100 Uni Custom under construction 4" off the pavement and built to drive.
69 M250 Crew Hiboy 472 C6 Ranger, getting a full rebuild.
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Old 10-20-2013, 08:27 PM
okiewelder okiewelder is offline
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Garbz, you are a welth of information. I have been working on my truck for so long l am replacing the patches l laped 20 years ago instead of butt welding.
Anyway do you have a closeup picture of how the top of the touque box is supposed to look with the floor removed? I have some of my floor removed and there is some rusted out so l have no idea what its supposed to look like.
Thanks
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Old 10-21-2013, 12:31 AM
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I will see what i can dig up.

Garbz
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63 F100 Uni Custom under construction 4" off the pavement and built to drive.
69 M250 Crew Hiboy 472 C6 Ranger, getting a full rebuild.
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Old 10-31-2013, 10:17 PM
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Originally Posted by garbz2 View Post
I will see what i can dig up.

Garbz
Looking at a 61 unibody and just found out about this torque box issue. This truck has matching patches on the bed side. Sign of trouble?

IMG_0200.jpg
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Old 11-01-2013, 10:16 PM
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[IMG]Click the image to open in full size.[/IMG]
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Old 11-01-2013, 10:18 PM
nabengt nabengt is offline
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Just figured out the pic upload thing. Check out the patch on the bedside. Evidence of some torque box issue?

[IMG]Click the image to open in full size.[/IMG]
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Old 11-01-2013, 10:25 PM
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Yes a sure sign of trouble.

Her is another shot of a short bed. the front shows how it goes up to meet the rear floor and bed stampings.


Here is why unis rust out so easy. If the truck was not undercoated new it only has primer on the underside. No paint. Primer is porous and will suck up moisture. Plus the bed would quickly pinhole from the underside at the box. There was nothing in there but raw metal.



Instep rust came for the inside out through a flaw in the undercoating.

Garbz
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64 F100 "Christine II" 390 NP435 6" lifted 2 wheel drive
63 F100 Uni Custom under construction 4" off the pavement and built to drive.
69 M250 Crew Hiboy 472 C6 Ranger, getting a full rebuild.
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Old 11-01-2013, 10:36 PM
nabengt nabengt is offline
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Did that pic show up for you?
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Old 11-03-2013, 07:54 PM
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Yes, By the patch it looks like some work was don in the box area.
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64 F100 "Christine II" 390 NP435 6" lifted 2 wheel drive
63 F100 Uni Custom under construction 4" off the pavement and built to drive.
69 M250 Crew Hiboy 472 C6 Ranger, getting a full rebuild.
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Old 11-03-2013, 08:08 PM
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Bummer. It's a cool truck. 292 with BW 3 spd overdrive
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Old 11-03-2013, 08:08 PM
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