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Old 10-24-2006, 11:01 AM   #1
John Fabris
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Have not seen this one before... 4x4 using trailing arms

Hi All,

Here is a new one that I have not seen... Guy converted a 2wd coil spring truck to a 4x4 truck, but kept the rear coils and trailing arms....
I know this is not where to post trucks for sale from other places, but I am more commenting on how he converted it from 2by to 4by...

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Old 10-24-2006, 11:12 AM   #2
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Re: Have not seen this one before... 4x4 using trailing arms

From the one picture, it looks like the axle is under the trailing arms. Interesting! Can't tell what the two tabs or brackets are that are hanging down inboard from the trailing arms are though.....
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Old 10-24-2006, 01:47 PM   #3
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Re: Have not seen this one before... 4x4 using trailing arms

That would be a better ride and the rear axle can articulate a lot more, but if you tweek it enough, the bolt holding the spring on is taking all the brunt!! You can get the axle mount pads new, and just swap left for right and putem under the axle instead of on top, get some lift out of it at the same time. I don't know about turning a good 2wd short bed into 4X4, but to each their own!!
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Old 10-24-2006, 01:52 PM   #4
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Re: Have not seen this one before... 4x4 using trailing arms

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I don't know about turning a good 2wd short bed into 4X4, but to each their own!!
im not sure why you wouldn't...
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Old 10-24-2006, 01:56 PM   #5
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Re: Have not seen this one before... 4x4 using trailing arms

Panhard bars can only move so much, right? I think I saw on "Extreme 4x4" where they made some adjustable ones....

Looks to be a sharp truck.
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Old 10-24-2006, 02:13 PM   #6
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Re: Have not seen this one before... 4x4 using trailing arms

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Panhard bars can only move so much, right? I think I saw on "Extreme 4x4" where they made some adjustable ones....

Looks to be a sharp truck.


Yeah, but that spring is it. Up and down the panhard doesn't really regulate that but it does on the side to side. It is a great setup and they use it in one form or another in the CORE trucks, it works or he wouldn't be driving it!!
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Old 10-24-2006, 02:36 PM   #7
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Re: Have not seen this one before... 4x4 using trailing arms

can you say... sand dunes? hehe that would be lotsa fun!!..
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Old 10-24-2006, 04:29 PM   #8
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Re: Have not seen this one before... 4x4 using trailing arms

petersons did a write up truck about doing this to a 65, but they never finished the truck. the 2 part artcile was more about how to set things up from scratch, put a motor in that not only doesnt belong but with no exsiting referance points, how to setup a custom axle and so on. i wanted to do this to my 65 but i just didnt have the ablity when i had the truck.
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Old 10-24-2006, 06:43 PM   #9
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Re: Have not seen this one before... 4x4 using trailing arms

When I converted my 70 c/10 to 4x4, I installed leaf springs. If I'd have left my old coil springs in, it would have saved a lot of work. I'm sure this is why they left the coils in.
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Old 10-24-2006, 06:54 PM   #10
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Re: Have not seen this one before... 4x4 using trailing arms

In an old issue of 4X4 mag, there was a similar conversion where the rear was mounted under the trailing arms and the front used a chevy axle mated to ford arms with the spring cups, and standard 3/4 ton front springs, using the standard 2 wheel drive crossmember. The set-up looked good and the only major fabrication was a crossmember for the ford arms.
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Old 10-24-2006, 07:24 PM   #11
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Re: Have not seen this one before... 4x4 using trailing arms

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Originally Posted by stepn67 View Post
In an old issue of 4X4 mag, there was a similar conversion where the rear was mounted under the trailing arms and the front used a chevy axle mated to ford arms with the spring cups, and standard 3/4 ton front springs, using the standard 2 wheel drive crossmember. The set-up looked good and the only major fabrication was a crossmember for the ford arms.
that was the white 72 in 4WOR, right? i have that issue somewhere. white truck blue ford front suspension. different...
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Old 10-26-2006, 12:48 AM   #12
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Re: Have not seen this one before... 4x4 using trailing arms

Quote:
Originally Posted by stepn67 View Post
In an old issue of 4X4 mag, there was a similar conversion where the rear was mounted under the trailing arms and the front used a chevy axle mated to ford arms with the spring cups, and standard 3/4 ton front springs, using the standard 2 wheel drive crossmember. The set-up looked good and the only major fabrication was a crossmember for the ford arms.
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Originally Posted by 724wdcopper View Post
that was the white 72 in 4WOR, right? i have that issue somewhere. white truck blue ford front suspension. different...
If one of you can find that article, I'd like to see some pics of that! I can't quite wrap my head around how that would work.
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Old 10-26-2006, 03:02 PM   #13
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Re: Have not seen this one before... 4x4 using trailing arms

'70,
Can't find the mag, but the diagram shows the basic idea.
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Old 10-26-2006, 07:26 PM   #14
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Re: Have not seen this one before... 4x4 using trailing arms

Factory 4x4 4-link...right?

Kinda like it, has promise IMO.
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Old 10-26-2006, 08:16 PM   #15
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Re: Have not seen this one before... 4x4 using trailing arms

Mine was a hevy duty 2wd when I converted it to 4x4 so I already had rear leafs. But in an effort to make it ride better I swaped in the coil set up , using f150 front coils and stock chevy arms with the axle mounted on the bottom, it woked great till I cracked one of the arms. then I made stronger bars and replaced the springs with air bags, now I am back to leafs. the coils and bags sure road better, but with a lifted 4x4 I was woried about blowing a bag on the highway, I think dropping down over a foot would be bad..
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Old 10-24-2006, 07:05 PM   #16
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Re: Have not seen this one before... 4x4 using trailing arms

Quote:
Originally Posted by John Fabris View Post
Here is a new one that I have not seen... Guy converted a 2wd coil spring
truck to a 4x4 truck, but kept the rear coils and trailing arms....
Well, that's different alright
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Old 10-26-2006, 10:21 PM   #17
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Re: Have not seen this one before... 4x4 using trailing arms

i think the main concern would be adding a swivel joint to the front of the trailing arms as that would be a major stress point. i would also probalby go to a whatts link or 3 link instead of the panhard bar. otherwise i don't see any reason why doing this conversion would be difficult or unrealistic.

as a perk nascar allready uses a swivel joint for there trailing arms. lucky for us they slide right in the bushing sleaves and are somewhat cheap.
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Old 05-16-2022, 12:37 AM   #18
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Re: Have not seen this one before... 4x4 using trailing arms

Just googled 4x4 with trailing arms and this thread popped up.
Other than it being odd, what really would be an issue?
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Old 05-16-2022, 01:54 AM   #19
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Re: Have not seen this one before... 4x4 using trailing arms

An old thread, pretty cool. Thought about this on my project. Would not have used stock trailing arms. The custom Deaver spring packs I chose will work for me and kept cost lower. I started with a rear leaf truck though. Love to see custom mods people do.
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Old 05-16-2022, 07:46 AM   #20
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Re: Have not seen this one before... 4x4 using trailing arms

Back then I recall seeing a Grapefruit Yellow Suburban converted to 4wd, retaining the coil rear suspension. It was lifted with big tires. That makes two I know of, but none since.
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Old 05-16-2022, 02:29 PM   #21
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Re: Have not seen this one before... 4x4 using trailing arms

When I brought this up on the 4x4 side a little while back Tim you mentioned that Burb and I was pretty sure I knew the one you were talking about. I searched the board for a long time trying to find it, but Ive never been the greatest at search. I personally like the idea of converting like this. I have a set of cucv ten bolt axels that have been sitting in the barn forever. It keeps me thinking of this swap, but I also think realistically Ill never do it and should just put the axles on Craigslist.
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Old 05-16-2022, 04:11 PM   #22
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Re: Have not seen this one before... 4x4 using trailing arms

with some Johnny joints at the mounting points for the trailing arms it would probably articulate better than leaf springs.
I considered making my 67 into a 4wd and I talked to ORD about this very thing, using their front 4 link kit, the guy told me that it would work just fine with the rear trailing arm suspension...
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Old 05-16-2022, 10:06 PM   #23
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Re: Have not seen this one before... 4x4 using trailing arms

For light duty trail runs/fire roads, occasional snow storm, and the boat ramp, which is my guess that most vintage 4x4’s are used for, I think keeping the trailing arm suspension would make far a great 4x4 conversion.
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Old 05-17-2022, 08:50 PM   #24
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Re: Have not seen this one before... 4x4 using trailing arms

Where would you get rear coil springs to bring the truck high enough in the rear to match a converted to leafs front? Seems like most all of the conversion "kits" for the front C to K are close to 4 inch lift. If I ever did this the most I would want would be 2 inch.
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Old 05-18-2022, 05:09 AM   #25
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Re: Have not seen this one before... 4x4 using trailing arms

If I did this conversion, I wouldn't want to be any higher than what my 66 is now.
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