Is this dually Factory or "homemade"?

[JustTom]

I ran across this truck on CL a while ago.
It was advertised as a 1988.

Is it a cab/chassis with a regular bed?

Or is it dual wheels on a regular truck?

This is the only pic, I have never seen it in person.



I have a 1984 4wd regular cab dually cab and chassis with a commercial flatbed on it.
I don't like the flatbed, it is too big and wide and I'd like to shorten the frame and put an 8' bed on it.

Tom

[Keith Seymore]

Homemade, or a mismatch of parts. The factory dually pickup will have the large add on fenders on it.

Keep in mind the dually pickups have a wider rear track. The cab chassis dual rear axle would be tucked closer inside the box side.

K

[SCOTI]

Agreed. Could have been a SRW (single rear wheel) 1-ton that had a cab & chassis (tow truck/flatbed) rear housing swap.

[nekkidhillbilly]

thats a cab a chassis truck with a bed stuck on it

[SCOTI]

Originally Posted by nekkidhillbilly

thats a cab a chassis truck with a bed stuck on it

How can you confirm this?

[nekkidhillbilly]

Originally Posted by SCOTI

How can you confirm this?

how can you not? dual wheels that are as wide as a srw truck. unless he welded two frames together cause dual wheels on a srw truck will hit the frame. then its still a half c&c truck.

[Rubble]

Originally Posted by nekkidhillbilly

how can you not? dual wheels that are as wide as a srw truck. unless he welded two frames together cause dual wheels on a srw truck will hit the frame. then its still a half c&c truck.

I will have to measure the spring hangers for sure,but my 86 K25 was a converted dually when I got it.All the PO did was put longer studs on & he made it into a dually & the tires didn't hit the frame..

[SCOTI]

Originally Posted by nekkidhillbilly

how can you not? dual wheels that are as wide as a srw truck. unless he welded two frames together cause dual wheels on a srw truck will hit the frame. then its still a half c&c truck.

My point was its just as possible it was a srw truck that had a rear axle swap..

[meatwagon83]

Originally Posted by nekkidhillbilly

thats a cab a chassis truck with a bed stuck on it

hit the nail on the head, i have seen this many times

[lolife99]

http://www.pirate4x4.com/tech/billav...ble/index.html

SRW (single rear wheel truck) 67.5"

DRW (dual rear wheel truck) 72"

C&C (cab and chasis truck) 63.5"

[nekkidhillbilly]

Originally Posted by lolife99

http://www.pirate4x4.com/tech/billav...ble/index.html

SRW (single rear wheel truck) 67.5"

DRW (dual rear wheel truck) 72"

C&C (cab and chasis truck) 63.5"

and like i said the inside tire would hit the frame on srw truck. with this truck im sure they had to widen the tubs in the bed.

[Rubble]

Originally Posted by nekkidhillbilly

and like i said the inside tire would hit the frame on srw truck. with this truck im sure they had to widen the tubs in the bed.

Just went out to shop & measured my 86,the spring hangers on same width as my other 3/4ton trucks.The 86 was a converted dually when I got it & the tires didn't come close to the frame.It has a deck on it,so tubs are not an issue.

[Rubble]

I can't find the thread right now,but isn't a cab & chassis 4" longer than a regular truck? Cab/box combo? I'm with SCOTI on this one,started as a CrewcabSRW that had a dually rear put under it.

[GM72K10]

Originally Posted by Rubble

I can't find the thread right now,but isn't a cab & chassis 4" longer than a regular truck? Cab/box combo? I'm with SCOTI on this one,started as a CrewcabSRW that had a dually rear put under it.

Single Cab, Cab and Chassis would be longer than a pickup dually (135.5 vs 131.5) but a 4 door cab and chassis and a 4 door pickup (with or without box) have the same wheelbase (164.5).

[lolife99]

Originally Posted by GM72K10

Single Cab, Cab and Chassis would be longer than a pickup dually (135.5 vs 131.5) but a 4 door cab and chassis and a 4 door pickup (with or without box) have the same wheelbase (164.5).

I think SCOTI is talking rearend width,... not chassis wheelbase.

[Rubble]

Originally Posted by GM72K10

Single Cab, Cab and Chassis would be longer than a pickup dually (135.5 vs 131.5) but a 4 door cab and chassis and a 4 door pickup (with or without box) have the same wheelbase (164.5).

That's what I was thinking about,single cab & chassis..

[GM72K10]

I know it was an answer to Rubble

[LONGHAIR]

You can't bolt dually wheels onto a regular SRW axle, so it's width would not matter anyway.
Actual axle housing length is not really the issue, it is from one wheel mounting surface to the other that matters.

[Rubble]

Originally Posted by LONGHAIR

You can't bolt dually wheels onto a regular SRW axle, so it's width would not matter anyway.
Actual axle housing length is not really the issue, it is from one wheel mounting surface to the other that matters.

That's the way this 86 was when I got it,looks like the PO put longer studs in,then bolted dually wheels to it.I don't have any pictures because I singled it out.Duals don't work very good in mud or snow.Its a14 bolt full floater under a 3/4 ton truck.I just changed to shorter studs & bolted some wagon wheels on.

[nekkidhillbilly]

srw axle with duals would hit frame the frame isnt as wide on cc in the back

[lolife99]

Originally Posted by nekkidhillbilly

srw axle with duals would hit frame the frame isnt as wide on cc in the back

I think you mean they would hit the leaf springs.
There is no way they would hit the frame first

[SCOTI]

Originally Posted by lolife99

I think you mean they would hit the leaf springs.
There is no way they would hit the frame first

Exactly. Seems more than 1 guy has swapped a C&C axle under a dually as an alternative to widening the dually fenders when doing the 10-lug big wheel swap.

[nekkidhillbilly]

Originally Posted by lolife99

I think you mean they would hit the leaf springs.
There is no way they would hit the frame first

the leafs are no wider than the frame idk what you mean im saying the inside tire is gonna rub metal if you try it on a regular frame width truck. even without a bed.

[lolife99]

Originally Posted by nekkidhillbilly

the leafs are no wider than the frame idk what you mean im saying the inside tire is gonna rub metal if you try it on a regular frame width truck. even without a bed.

My point was the leaf spring is outside of the frame rail.
You kept saying the tire would hit the frame.

[joe231]

Originally Posted by nekkidhillbilly

the leafs are no wider than the frame idk what you mean im saying the inside tire is gonna rub metal if you try it on a regular frame width truck. even without a bed.

The cab and chassis axle and the SRW 1 ton axle have the same spring spacing and are the same width. (all the 1 ton axles have the same spring spacing) The difference in WMS surface is made up by the hubs. The cab and chassis axle uses dually hubs to move the wheels inboard, the springs are in the same location as the SRW 1 ton axle (you can convert a SRW axle to a C&C by changing to dually hubs and moving the backing plates inboard, the axles are identical). A cab and chassis axle is a bolt in deal on a 1 ton pick-up, the inner duals will not rub on the springs or the frame. The only modification that will possibly be needed is the inner wheel well/bed floor. Look at the picture, the outer dual is out side of the outer wheel opening wheel, so the full width of the duals is not completely under the bed. This is a fairly common modification.


So just to reiterate....

All one tons (DRW, SRW, and C&C) have the same spring spacing
while all 1/2 and 3/4 tons have wider spring spacing.

You can not bolt a one ton rear axle into a 1/2 or 3/4 ton or vice-versa. You would need to either change spring hangers or relocate the spring perches on the axle tubes.

And I'm about 95% positive that the C&C frames are the same width as all other trucks, they are just longer from the back of the cab to the rear axle.