: Ford F-350 dually conversion?
Action Fab 04-24-2009, 05:40 PM I am looking at buying a 95 F-350 SRW 4dr long bed 2wd. I will be building a flat bed on the back to put a jeep on and need it to be DRW so its stable.
What I need to know...
Can I bolt up a set of dualls in the back on the stock axle?
I know the rear is wider, but how much wider. Also know that I will need front spacers up front.
Thank you
crashnzuk 04-24-2009, 05:53 PM I would say yes, just double check spring to tire clearance. Should be fine though. Since you are putting a flatbed on it, you can work around the duals. The good part is that it won't be as wide as a dually pick-up, more like a cab & chassis.
Travis..
MoonDog 04-24-2009, 06:05 PM The inner of the duals will hit the frame / springs. There are companies out there that sell spacer kits for front and rear to do what you want to do.
Personally if it were me,since the truck is getting a flatbed I'd order custom spacers for the rear that gave me enough tire / frame clearance, but werent any wider than they had to be. I have a DRW crew cab long bed and the duals suck balls in parking garadges.
Action Fab 04-24-2009, 08:36 PM this is Arkansas we dont have parking garadges and its by no means a daily driver. its sole perpouse will be to haul my jeeps.
Why would I need spacers when the SRW axle is wider than the DRW. I think the only problem will be brake clearance.
fairlane_68 04-24-2009, 08:39 PM .
Why would I need spacers when the SRW axle is wider than the DRW. I think the only problem will be brake clearance.
To keep the tires from contacting each other in between the wheels. Makes them go boom.
Action Fab 04-24-2009, 09:03 PM Thats why dually rims have a neg offset... duh. Duallys dont have wheel spacers stock so why would i need them when I put dually rims on the truck.
You know I don't quite think ya'll know what your talking about. I guess I'll just figure it out on my own.
Action Fab 04-24-2009, 09:06 PM Just so we are clear I am talking about bolting factory dually rims all the way around with spacers on the front.
Jrod-13 04-24-2009, 09:08 PM No, the dually rearends are wider by a few inches, the C&C axles are the same width as the SRW ones, but have the spring perches moved in, as well as a narrower frame.
AERONUTT 04-24-2009, 09:10 PM Well, since we don't know what we're talking about, go ahead and bolt 'em up like you want. Let us know how it works out for you. Pics would be awsome.
Action Fab 04-24-2009, 09:30 PM Well, since we don't know what we're talking about, go ahead and bolt 'em up like you want. Let us know how it works out for you. Pics would be awsome.
I neaver said anything about you. I have always read that dually rear end are narrower, so if I'm than thats fine. Id like to know the exact WMS of the two (DRW & SRW). just to clearify
MoonDog 04-24-2009, 09:32 PM Why would I need spacers when the SRW axle is wider than the DRW.
No, the DRW axle is wider than the SRW.
Duallys dont have wheel spacers stock so why would i need them when I put dually rims on the truck.
Yes they do have spacers in the front, in the form of a hub with a wheel mount surface that sticks way out. Stock they don't have spacers on the rear axle because *drumroll...* the axles are wider!
You know I don't quite think ya'll know what your talking about. I guess I'll just figure it out on my own.
why yes, yes I imadgine you will :p
MoonDog 04-24-2009, 09:37 PM I neaver said anything about you. I have always read that dually rear end are narrower, so if I'm than thats fine. Id like to know the exact WMS of the two (DRW & SRW). just to clearify
Do less reading and more thinking. On a dually, the inner dual matches the front tire in width. since the mounting surface of that inner dual sits out past the edge of the tire (negative offset like you said) thats where the mounting surface of the axle has to be, out past the tire. On a SRW, the wheel mounting point is inside the tire (normal rim) that is at teh same track width of the inner of a dually.
crashnzuk 04-24-2009, 09:43 PM You just need to do a quick measurement to see if there is enough room before spring contact. You guys who are argueing about wider/narrower are basically all right. The reason a dually "pick-up" rear is wider is to keep the inner tire in the same place as a single so Joe homeowner can put a 4x8 sheet of plywood between the wheelwells. A truck with a flatbed has no such restrictions. If the wheels fit without rubbing, you're good to go. Especially if you are building the bed specific to the truck.
Travis..
Action Fab 04-24-2009, 09:47 PM yes I understand all of this I even said I would be using a spacer in the front. reread my first post.
And my understanding was the the dually rears were narrower so that once the outer wheel which has a 1"-2" possitive offset would have a narrower track width once once bolted on so that the truck doesn't exead the 93" width limit. with a 2"-3" narrower housing the tire width would be split to that of the SRW. with an overall track width of 6"-10" wider wrather than 12"-16" like your explaining
Action Fab 04-24-2009, 09:49 PM You just need to do a quick measurement to see if there is enough room before spring contact. You guys who are argueing about wider/narrower are basically all right. The reason a dually "pick-up" rear is wider is to keep the inner tire in the same place as a single so Joe homeowner can put a 4x8 sheet of plywood between the wheelwells. A truck with a flatbed has no such restrictions. If the wheels fit without rubbing, you're good to go. Especially if you are building the bed specific to the truck.
Travis..
thank you for that finally some one who understood my question. can some one give me an answer to this. Both spring spacing and brake clearance
MoonDog 04-25-2009, 01:40 AM thank you for that finally some one who understood my question. can some one give me an answer to this. Both spring spacing and brake clearance
Like I said in post #3, you can't just throw dually rims on a SRW axle because they hit the springs / frame. Been there done that. I blew up the rear end in my ford and wanted a narrower track width anyway so I was looking at buying a SRW axle (easier to come by around here) and building a flatbed, no dice.
I don't have the actual measurements with me, but you might try looking around on www.oilburners.net they have a section for the 6.9 / 7.3 IDI diesels that is like the PBB for this vintage of truck. Their tech for that section is not necesarily diesel specific, and there's lots of good information and specs over there.
nightcrawlers 04-25-2009, 05:56 AM first let me state i dotn know anything about ford axles... the rear in 95 is a 10.5 sterling? dana 70?
anyway,if you had a 1 ton chevy truck and a single wheel 14 bolt what you want to do is entirely possible.
with chevy the 1 ton trucks had differnet spring hangers and u bolts that moved the springs closer to the frame,wether the truck was SRW or DRW. so with the smallest available brake drum,the dually wheel will slide right on after machining a small lip out of the bottom of the hub,near the wheel mount surface.
those of you that are arguing about DRW being wider or narrower than SRW are not neccesarily comparing apples to apples. the cab&chassis dually axles are the narrowest(63" wms) ,followed by the SRW(67 WMS),followed by van axle(70 WMS),followed by the DRW pickup axle at 72 WMS. at least as far as chevy goes. fords numbers may be alittle different,but prolly follow that same order.
so running dual wheels on your SRW axle will give you a track width wider than the C&C,yet considerably narrower than a true dually pickup axle. if fords 1 ton uses the same spring mounting setup regardless of single or dual wheels,you should be good to go. other wise there may be spring interferance,as mentioned.
you will have to check it out for yourself. slide a dually wheel onto the hub and check for interferances that may need to be machined out of the hub,then check for brake drum and spring clearance.
in a worse case,you could just swap in a whole dually rear. should be easy to find since you dont have to be real picky about the ratios in a 2wd truck. junkyards around here are full of 2wd dually fords(imagine that- Found On Road Dead :flipoff2: ) so shouldnt be too hard to find a front hub/rotor to swap on. being a 1 ton, your truck should,i would think,allready use the same control arm,knuckle,etc,and brake caliper.
good luck!
philadelphia 04-25-2009, 05:53 PM Studs and lug nuts are different on the dually fords compared to the srw. Id also check to see if the hub dia is comparable to the dually rims if they do fit..You dont want the studs to bear the weight of the load..Thats the hubs job.
If it were me id go get the front end and rear axle from the dually as well as the rear springs if the pack is different..Id make the rear springs stiff as possible( im assuming your building a dedicated tow rig)
blakeape 04-30-2009, 02:22 PM I friend of mine has a SRW 4x4 PSD 1996 crew cab with a dumping flatbed that was built for his tree business. He also thought he could bolt on dually wheels without the factory bed in the way. No such luck. The inner duals hit the leaf spring with the factory srw axle. He is just running e rated singles for now. The dually rear ends are 6 inches wider if I remember correctly. Good luck and drop the attitude.
broncdawg 05-02-2009, 09:18 PM DRW axles are a dime a dozen, quit yer whinin and by one, you'll see why you can't bolt duals on a SRW axle.
philadelphia 05-03-2009, 10:04 AM Wow you guys just dont get it..The front hubs have spacers so that when joe manufacture build 400,000 trucks they dont have to provide another spare tire and wheel on top of the spare for the rear axle..`:rolleyes:
I guess nobody even thought of that..myself included..I actually got this from a source at gm.
swapping a factory dually axle would be best if you can get some.
Jimbo* 05-04-2009, 07:26 AM Actually, for the '92-'97 year models, Ford did not build their pickup bodied duallies. They were sent to Centurion Manufacturing for up fitting.
On that note, Centurion used spacers on the front and rear axles to fit the dually wheels.
Ford made the spacers for the front axles, and Arrow (craft ?) made the spacers for the 10.5 Sterling rear axles.
Southwest Wheel has these spacers in stock.
http://www.southwestwheel.com/fordconversion.htm
voodoo206 05-04-2009, 08:50 AM I have the axle u need. I Think it it came out of a '97 model DRW.
bhaugen 05-05-2009, 05:39 PM Actually, for the '92-'97 year models, Ford did not build their pickup bodied duallies. They were sent to Centurion Manufacturing for up fitting.
On that note, Centurion used spacers on the front and rear axles to fit the dually wheels.
Ford made the spacers for the front axles, and Arrow (craft ?) made the spacers for the 10.5 Sterling rear axles.
Southwest Wheel has these spacers in stock.
http://www.southwestwheel.com/fordconversion.htm
I might be wrong on this, but I think it was just the Crew cabs that came SRW those years. Other models had DRW available. My BIL did a ton of these conversions back in the day.
YellowSub1962 05-05-2009, 05:49 PM Are the payload ratings (NOT just the TIRES, but the Axles, gears, bearings, springs, brakes, etc) the same on the SRW and DRW Axles for that year? I'd be concerned about putting a jeep on top of of a SRW suspension and driveline, but I don't live in Arkansas so I might be overthinking and over worrying this :D
:usa:
Jimbo* 05-05-2009, 06:26 PM I might be wrong on this, but I think it was just the Crew cabs that came SRW those years. Other models had DRW available. My BIL did a ton of these conversions back in the day.
You are correct; I wasn't clear on that. I am sure that Ford did not offer a club or crew cab pickup in 4x4 those years; they were "factory" conversions by Centurion. Ford did make cab & chassis models in 4x4 though.
7.62FMJ 05-06-2009, 04:24 PM Hmmm...too bad this is a little late. I had a brand spankin' new DRW Dana 80 from a '07 F350. Complete from rotor to rotor. WMS was 74" and I can't quite remember the spring perch measurement...
Jimbo* 05-06-2009, 05:02 PM Bolt circle would be different; he'd either have to redrill the hub/rotors or carry two spares.
dirttracker 10-29-2011, 07:59 PM If you need a wider Ford dually rear end, there is one on craigslist-dallas/ftw that is about 2inches wider than a standard rearend and came from a 1996 Ford with low mileage. It is in Seagoville Tx. It's listed under Ford dually rear end. The owner bought it for his truck and found out it is just a little wider than his bed and opted to not use it. It is a factory posi-trac with .410 ratio gears.
pennsylvaniaboy 10-30-2011, 07:05 PM You would need a DRW rear ford axle from a 2wd DRW truck.This is the only bolt in option. a C&C axle will have dif spring perches.....
DT75FLH 10-30-2011, 07:44 PM If you need a wider Ford dually rear end, there is one on craigslist-dallas/ftw that is about 2inches wider than a standard rearend and came from a 1996 Ford with low mileage. It is in Seagoville Tx. It's listed under Ford dually rear end. The owner bought it for his truck and found out it is just a little wider than his bed and opted to not use it. It is a factory posi-trac with .410 ratio gears.
Last post was from 2009.....
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