i measured the rear end of my dually with stock tires and got 87" my frame was 38 from outside to outside rail. i was told that it might be a cab and chassis can someone with a dually help shine some light on my issue

 

Well whats your issue? are you wanting to know if your truck was originally a cab with chassis or a cab with a dully bed? I would have to go measure a truck first but im not sure what you lookin for.. If you can provide more detail it will be appreciated.

 

I own a Cab and Chassis, and the rear is narrower than a std. dually. Next time you walk up on a C&C, look along the side of the cab, eyeing the rear tires. Then walk up on a dually, do the same thing, you'll see the difference. When I go to a jobsite in the oilfield, in the really soft dirt, my front tires will land in between the rear duals....

 

what i am trying to figure out is if my truck is a cab and chassis. i gave my vin to the local dodge dealer they told me that they didnt make a cab and chassis in the first gen. my duals are barely outside the cab so i guess this is a cab and chassis

 

Correct, if you look down the side of the cab on a dually, the tires stick out there. If not, why have those fiberglass fenders out there over them? My truck was origonally a wrecker with a wrecker bed on it....I know mine was a C&C....they're full of it. They did make C&C's, mine was one of them.

 

what is the difference in a regular dually and a cab and chassis im curious

 

Width of rear axle and the standard cab C&C trucks have a slightly longer wheelbase.
Also, the rear axles on the C&C trucks had the heavier duty 35 spline axles and side gears in the carrier.
The giveaway is that they use Nuts and Cones to retain the axles, instead of just bolts.

Mark.

 

I copied this from 1stGen.org.... This gives you alot of good info and I believe Mark was even in on this discussion way back when.... Chassis differences Postby Richie O » Sun Jun 07, 2009 8:38 pm I stole this from another site. It was posted by MYSTERYMAN on TDR. I thought this might be useful. 1st gen frame repairs and swaps -------------------------------------------------------------------------------- The frames from 72 threw 93 are basically the same at a glance but quite different if you look closely.. The 8" (some were 7.5&quot frame was used on all the cab/chassis models. It was also used on all the 1 ton pickups and select 3/4 ton trucks.. Most of the 3/4 ton and all of the half ton's used the smaller 6" center frame. The 1st gen diesels 89,90,91.0 250, 3/4 ton used used the 6" frame but it was a bit heavier than the earlier gas version. You could order the 8" frame if desired but most were called single wheel 350's rather than 250's 89,90,91.0 350, 1 tons used the taller 7.5 " to 8" frame. The 8" was a bit heavier than the earlier gas version.. In 91.5 the 8" frame was updated and is heavier than all the rest that came before it... This is hard to see with the naked eye. But quite obvious on the blueprints. It was updated and the 6" frame was discontinued due to breakage problems... in conclusion..... All 91.5, 92 and 93's 250's and 350 diesels used the SAME frame ... The exceptions.....2wd verses 4wd....The frames are the same except for the front cross member's and spring hangers.... Converting a 2wd frame to a 4wd frame is rather easy assuming that you have the 4wd engine cross member and 4 spring hangers... Converting a 4wd frame to a 2wd frame is a whole lot of work !!!!! You have to change the front cross member and the engine cross member.. Weld in the motor mounts. Mount the upper control arm brackets.... None of the holes will be pre drilled for you. You will have to drill them all yourself.. The tolerance for these holes is .125 (1/8&quot on center .. If you miss the mark you may never get it to take a front end alignment or track properly... I would not recommend doing a 4wd to 2wd frame conversion to a novice or back yard mechanic.. One last note..... If you need to replace an 89,90 or 91.0 6" 250 diesel frame. And if you can not locate a diesel frame.. You can use an early 7.5" 300 gas frame.. All the holes will line up for the most part... Be sure to measure the wheelbase of the doner frame you buy... Trucks that were sold as "cab/chassis" have longer frames than Pickup trucks. And dually rear axles out of "cab/chassis" trucks are NARROWER than the dually rears out of pickup trucks.. Dually rears out of "cab/chassis" CAN be used in most cases in single wheel pickup trucks.. You may need to change the gears to get highway speeds with the diesel.. 3.55 to 1 ratio is the best choice for all around use when using stock size tires. I hope this answers all the frame questions User avatar Richie O Administrator Posts: 3899 Joined: Sat May 17, 2008 9:01 pm Location: New England Top

 

I've been looking at a 91 first gen dually cab chassis. Just trying to get a feeler for what it's worth. Any ideas? Mileage unknown since the odo broke in the mid 1990's

Did they make many first gen cab chassis?

5 sp getrag
160" wheel base & frame is heavy duty looking.
dump body / pto
3.55 dana 70 dually axle
Runs decent. feels weak to me but maybe I'm wrong since I'm used to my w250 with the fuel screw turned
Drives down the road ok, pulls to the right somewhat. rides nice. Feels like a smooth caddilac compared to my w250
Interior is filthy but in decent condition actually, no tears in the seat
The cab solid absolutely zero rust.
door hinges not worn or sagging
grille broken, (are 91 grilles hard to find?)
minor body dents
brakes are shot. needs complete brakejob, master cyl, rotors, possibly calipers. rear drum condition unknown.
Front coil springs look weak, sitting low. Obvious rub marks from tires occasionally bumpin the wheel well. could be from too much load forward in the dump body.

Opinions? Thanks

 

I have a 1989 or early 1990 C&C 4x4 frame and axles sitting here.
The axles are the 3.07s, but the rear is NOT the C&C axle, it was swapped for a dually (pickup) style axle years ago.

I have $1000 in it.
I was considering doing an early divorced case NP205 and a 2WD NV5600, along with a western hauler bed on it at some point.
It would probably get a hot P-pumped 12 valve in it in the course of the build.

Then again, I may just part it out. Nothing is sacred.

Mark.