I'm looking to turning my excursion into a dually. This build will be a 10" lift with 38's. I just don't really know where to start to do the conversion.. I will be putting the Fuel Hostage rims on the truck.. I want the whole truck to have the dually look, so that includes the spacer in the front also.. I want the tuck to be able to be used as a dually.. (without 5th wheel obviously).. but if I want to tow something and have stability I have it... since its a SUV I don't have to worry about having weighted tag...




**what all do I need... or where I can just buy from.. the wheels are going to be 22X8.25 8X170 FRONT 127MM OFFSET.. so like the inside wheel? and rear adaptors...?? plus front that will fit the excursion..??




thank you

 

Welcome to the forum!


So a dually with 38"s is going to require how big of a between dual spacer......?
You can attain a pretty great amount of stability without going to dual rear tires, thousands of SRW trucks (including EXs) do every day. Just saying. Most of any stability added by the duals would be replacing stability lost by the big lift and taller tires.


Your idea sounds like it would result in a pretty cool looking big beasty though.

 

The truck is mostly going to be for show.... Since they don't make them anymore.... But I still don't want the dually's rubbing down the road... Not safe... Even if it has no real load.. Not like it really will ever... Might just do a 6" lift or 8.. That way it might work out better... But I want the whole dually look so don't I have to get the front adapter as well??

 

Yes, if you want the "full dually" look with the big offset dually rims all around then the front will need the offset spacers to accommodate the same rim type and size as the rear 4 rims.
How are you planning to address the rear dually fenders at the EX's rear doors, I have seen it done a couple of different ways over the years. Are you planning to use the big dually fenders like was used on the pickups of the same vintage as our EXs or the smaller rounder late model rear fenders?

 

where to start ? start with a budget. your funding will more or less dictate how you build your project.

ballpark how much cash you have to spend and what sort or resources and skills you have to accomplish the task.

a $50k build will be a whole different approach then a $15k build.

 

Could the OP switch both axles from a dually?

 

Provided they come from a 4x4 leafsprung SD rig I don't see why not...

I ran a quick search on Google, and to me every single one looks hideous. I hadn't even thought about the rear door handles or fuel filler neck, and the work around solutions lend a very unsightly fender profile IMHO.










I wonder if running a narrower rear wheel would work with some of those Icelandic expedition fender flares to maintain a smoother fender transition? Granted those flares require extensively more body work, but I think the end result would be far more appealing plus allow for larger tires without as high of a lift (low CoG for the win).

In order to be able to rotate the tires, the front wheels would need to match the width profile out back as well. On aftermarket wheels, you don't rotate the wheels - you rotate the tires instead. I remember loathing dually owners that would come in 15 minutes before closing when I worked at Discount tire back in the day. Break down all six, rotate the rubber, remount and inflate (which took forEVER), and rebalance. Ugh. The stock steel wheel rigs were so much easier as those were just pulling off wheels and rotating the assemblies.

 

My budget is how ever much it cost me to make this truck into a show truck. I plan on using the same finders they use on the pickups.. They will be a two pice "four pice". Already cut and ready to mount to the side. If anyone was wondering I was just going to get spacers for the back... But I hear that it's dangerous?? And just put that dually like spacer up front to complete the look. I just looked at my service trucks dually and the rims touch.. Is that because it's a dually rear end..?

 

I don't think the rear axle is going to work with the existing WMS to WMS distance, especially since the inner wheels are mounted inverted. There should be a very thin little metal spacer between the dual wheels out back, that's what I remember seeing on stock rigs. I would absolutely not be comfortable with the extra leverage exerted by a spacer and dual wheels. Single wheels yeah sure, but not duals. I don't even know if they make a spacer with threads long enough to accommodate the extra width required to mount two aftermarket wheels on a single set of studs. Aftermarket's are inherently thicker than stock.

 

This is what my service truck looks like. Though, I'll be putting bigger tires on the truck so wheel spacer? Or bigger offset?

 

-Said everyone before starting a project that was abandoned halfway through


Seriously, you have GOT to set a budget first. Even people that have millions have a plan going in. You can't just say "Any amount" unless you just don't care and are willing to throw money into it over and over again at the same thing until it's right.

 

Sorry if I missed it but what do you plan on towing with this unit that a properly set up excursion won't tow? Some guys on here are pulling some pretty big loads safely. Like 35' or bigger travel trailers. Also setting up a truck with 10" lift and 38" tires is not my idea of a good tow rig. Sorry.

Oops missed the show truck parts. Well I'll give you props for originality anyways. Good luck.

 

I actually like this look. see how the gas door is flush with the fender vice being recessed.

seemed like a stupid idea at first, but I can see where this would be a great tow rig for larger tows

 

Options

2016 SD $33,000
11+ EX conversion $41,000
Dually EX $10,000

Budget: $84,000

 

OK, here is a major problem. If you look at your EX's factory rear axle vs a factory dually axle you will see that the dual wheel setup has a built-in spacer at the Wheel Mounting Surface (WMS like Matt mentioned earlier). This is needed due to the dually rims being offset so much, a necessary thing to make that whole dual wheel mounting possible, see how the rim's WMS is actually OUTSIDE the rim/tires profile? On a typical single wheel rig the WMS is well inside that same profile. So in order to use the factory EX axle you would need to have a spacer to move that WMS out to dually specs. Now comes the tricky/scary part....... those big 38" tires are wider than the standard dually tire (by a LOT!, typically duallys run more narrow tires than SRW trucks). When running wider tires on dual wheel truck you MUST use a spacer between the rims to keep the rubber on the tire side walls from touching, if they touch/rub each other they WILL fail. I'm not sure if I'd be comfortable having a spacer added outboard of another add-on spacer, especially while you had mentioned better stability for heavy towing. Sounds like a really bad mix to me. Maybe OK for a "show truck" that is never going to do any work at all, not my cup of tea though.