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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

Rock Guard differences

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Old Dec 19, 2018 | 02:18 PM
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Rock Guard differences

Why is the rock guard taller on an F250 4x4 or F350 than the one on a F100 or F250 2wd? Are the body bushings different and the cab sits higher off of the chassis? Are the Taller ones for the F250 4x4 available in reproduction? Just to clarify. The part I'm asking about, is the panel that is below the grill, and behind the front bumper.
 

Last edited by Another66; Dec 19, 2018 at 03:39 PM. Reason: clarification
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Old Dec 19, 2018 | 05:49 PM
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On the 2WD trucks they called it the

Front Bumper Stone Deflector Assembly - C1TZ-17A862-C

1961-66 F100/250 (4 x 2) and 66 F100 (4 x 4)

This one is reproduced.

But, most 4WD trucks do not have to be concerned with mere stones!

They call it the

Lower Radiator Grille Panel Assembly - C3TZ-8188-A

Applications include 1961-65 F100/250 4WD, 66 F250 4WD, 1961-66 F350/750

Not reproduced that I know of.

Chad
 
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Old Dec 20, 2018 | 07:18 AM
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Thanks I couldn't remember the proper terminology for the parts. I knew you would be one of the people that could answer my questions. Can you tell me why the C3TZ-8188-A is taller than the C1TZ-17A862-6? I'm asking because I will be putting my 66 F100 cab onto my 78 F250 4x4 chassis. I have been digging up as much info. as possible as I go along but I have not been able to figure this one out.
 
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Old Dec 20, 2018 | 09:17 AM
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Originally Posted by Another66
Thanks I couldn't remember the proper terminology for the parts. I knew you would be one of the people that could answer my questions. Can you tell me why the C3TZ-8188-A is taller than the C1TZ-17A862-6? I'm asking because I will be putting my 66 F100 cab onto my 78 F250 4x4 chassis. I have been digging up as much info. as possible as I go along but I have not been able to figure this one out.
The piece C3TZ-8188-A is vertically oriented instead of horizontally oriented like the C1TZ-17A862-C, but where they attached to the fenders is the same general style. There are 3 bolts on either end. The fenders are all the same attaching points, too. They didn't change between 2WD and 4WD, excepting small radius versus large radius in some cases. But that was just the opening radius of the fender. They otherwise attach identically.

Here's the attaching point on one end of the C1TZ-17A862-C. You can see they change from the horizontal orientation of the main portion of the panel to the vertical ends where it attaches to the fenders.



One factor I can think of that they used the other style on the (predominantly) 2WD trucks would be to gussy it up some. The horizontal piece would hide the frame rails that were exposed on the 4WD trucks AND, in the case of the chrome front bumper and chrome or anodized aluminum grille (depending on year) the argent silver painted filler blended in better than a body color painted piece between the two.



Other reasons might include

1. A PTO front winch can be mounted without as much or any interference from the panel on the 4WD trucks.
2. A PTO driven snow plow can be mounted and the PTO drive shaft to the plow would have more clearance. No trimming might be needed.
3. The 4WD *might* sit a little higher on the frame than the 2WD - using the terms generally (ND) - but not a lot. Maybe 1/2" - 3/4" higher, but not much more if any.

Case in point. Look at how nicely the PTO driven winch is tucked up underneath and the panel has not been cut at all. On the closer edge, just to the left edge of the light, you can see the black handle to engage/disengage the winch and change direction of rotation. Also notice the creative location of one of the front lights that has been added to this truck. The winch cable feeds directly through the front bumper to the 4-way rollers. Yes, the front bumper was cut on this truck many years ago. It has never been rechromed, you can see the pits in the chrome.



When I get a chance I'll take the 2WD panel in the picture above to the 4WD in the picture below and set the panel in relative position to see where it would roughly land in relation to the front bumper. It'll be a bit of a guess since the panel is in place on the 4WD truck.

Here's a picture of that same light (Arcadian) blue truck from June 1970 with the second and current owner at the wheel. You can see the winch was already installed. He and my Dad were both members in the 4X4 Rescue Council i.e. they would go up in the woods and look for lost hikers and stranded people. And they found some using this truck to go places nobody else could at the time. You can see the license plate has been moved to the upper right frame rail and the 4x4 Rescue Council plate is on the left frame rail. CB antenna off the back right corner and at the time - a spotlight on the roof.



Chad
 
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Old Dec 20, 2018 | 09:41 AM
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TA455, Thanks, that info. does help. Do you know if the cab and core support rubber bushings are the same for say a 66 F100 and a 66 F250 4x4? I'm not trying to beat this to death. I just don't want to buy parts I can't use. That's a cool pic of that 4x4 in action. My truck has those western jr mirrors and at one point had a spot light on the roof.
 

Last edited by Another66; Dec 20, 2018 at 09:47 AM. Reason: I didn't see the action pic originally
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Old Dec 20, 2018 | 09:51 AM
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They are completely different between those two applications as far as rad support mounts and front cab mounts. And this is where some of the visual difference in height that I'm seeing comes in.

The core support mounts on the 1966 F250 4x4 use some "perches" that are factory riveted to the frame and springs to isolate vibration and allow for more twisting of the frame to body. Called torsion springs. The 1966 F100 4x4 is like the 2WD trucks of 1965/66 with the rubber cushions in there. The perches might be slightly taller than the rubber cushions but the frame also seems to "dip" right at the front foot or so a little more so than the 2WD frame. Makes it hard to compare apples to apples.

 
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Old Dec 20, 2018 | 09:57 AM
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Here's a picture of the front cab mount on the 1966 F250 4x4. Sort of a U-shaped piece of rubber in there with a metal piece embedded in the rubber that supports the cab channel.



Chad
 
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Old Dec 20, 2018 | 10:14 AM
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Originally Posted by Another66
TA455, Thanks, that info. does help. Do you know if the cab and core support rubber bushings are the same for say a 66 F100 and a 66 F250 4x4? I'm not trying to beat this to death. I just don't want to buy parts I can't use. That's a cool pic of that 4x4 in action. My truck has those western jr mirrors and at one point had a spot light on the roof.
I really love these action shots. This truck was/is absolutely amazing to watch and ride in. I was standing next to my Dad for most of these shots so looking at them makes it feel like yesterday...or maybe the day before...lol

You can see it was on quite the angle. Hill was about 500 feet long as a guess. Maybe more than that.





And one from November 1968 doing Brodies in the snow.



Chad
 
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Old Dec 20, 2018 | 10:18 AM
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Chad, that Ford Truck Parts Illustration helps provide some clarification for sure. Thank you.
 
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Old Jul 13, 2019 | 01:07 PM
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Hey Chad,
You mentioned the rock guard is reproduced, do you have a good source?
Also kicking around new (or refurbished) aluminum grill.
 
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Old Jul 13, 2019 | 01:25 PM
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Old Jul 14, 2019 | 09:21 AM
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Goodmark was reproducing the stone deflector - or did make a run of them. Shows they are low inventory but they sell to all of the other vendors so you might be able to find one or contact Goodmark to see what the story is. The Goodmark number was gmk314302061

https://www.goodmarkindustries.com/p...d=gmk314302061
 
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Old Jul 14, 2019 | 04:26 PM
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Those are really cools pics of that truck and an awesome truck. Does it still look the same?

I can remember my introduction to F250 4x4s. Early 70s, my dad bought a 66 F100 2wd new, so to me that was a pickup truck. He drove it in fields, he also had a 1940 Ford 1.5 ton flatbed, same thing with that. I grew up around tractors also. One day at a local farm auction a guy pulls up with a dark green F250 4x4 bumpside, tires about like the photos you have. Proceeds to back into a field to park, just like backing into a parking space at a store. Thing was there was about a two foot high bank to get into the field and the field itself on an in-line about half of what is shown in your picture. Amazing stuff for a little kid and the beginning of my love of 4x4s.
 
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Old Jul 14, 2019 | 06:34 PM
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After some googling the ones with the rock guard # don't appear like ours.
But the lower grill assembly ones look very close.
 
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Old Jul 14, 2019 | 08:50 PM
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I'm not sure what you were saying there. Here's a link to Amazon where you can see a picture and the Goodmark number I mentioned is there, too. Currently unavailable there.

Amazon Amazon


https://www.getallparts.com/Aftermar...p/GMK314302061

https://www.rockauto.com/en/catalog/...eflector,14179

this one at Rockauto as unavailable - you can click on the tiny picture to see it bigger.
 
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