Ecostang

Looks pretty good, I wouldn't want to go any more than 5/8". I'm sooo glad these worked.

Again I want to keep the sleeper look, that's why I'm using stock wheels. I'll widen them as much as I can once I get it running and driving.

Ecostang

I also had to change out my radiator overflow tank to this aluminum one. After I installed the ECU in to the firewall the old plastic tank wouldn't clear it. I'll have to make some new brackets to bolt it down.

laserred38

Get the replica GT/CS wheels from AM, 19x10 all around. They'll clear the Brembos and you won't have to use spacers, and then you won't have to get the factory ones widened either. They're also on sale lol

http://www.americanmuscle.com/anthra...9x10-0514.html

Ecostang

D*** that would have been cheaper for sure but I'm going 11.5" on the rear wheels, I need the spacers in order to do go that wide.

sqidd

There is no point in that. 315mm (A real 315) is as fast as you will go back there and still be in the wheel well. And most 315's run best on a 11" rim.

Ecostang

I would agree except that tire size isn't available in 19", at least that I can find. I was wanting the widest nitto tire I could get on 19" wheels, there is not a lot to choose from. My choice is a 305 or a 325, 305 just isn't going to do it.

My Shelby has 295s 20" MPSS and they are nearly worthless. I can fishtail the rearend at 70 mph, 1st and 2nd gear are a joke trying to get traction. Although I won't have the HP that the Shelby has I should be getting close to the torque before I'm finished. I would hate to go narrower and regret it, if I go 11.5 I could put the 325.

This is the nitto NT01 road course tire

laserred38

I have 305/30/20 on my GT with just a catback, HF cats and AED dyno tune. I can spin at will too lol

sqidd

325's don't fit in the fenders.

Ecostang

I had to get a 2011+ gas pedal and brake sensor. The F150 harness plugged directly in to the newer mustang parts.

Ecostang

Just so we are one the same page.... I'm talking about putting 325 on the rear only. For the fronts I would go with a narrower tire for sure.

I found plenty of people putting wider tires than 325s on the rear of s197 mustangs, some had 335s on them. This is assuming that you have the sway bar replaced with the whiteline that repositions it, which I have. It's also assuming a bump stop relocation kit is installed, which I have on order. Lastly the dust cover over the shock has to go. From what I read I shouldn't have any issue after these modifications.

I also have a 15mm spacer so wether I go with 11" wheel with no spacer, or 11.5" with spacer the inside position of the wheel should be about the same.

If I'm missing something please let me know, I'm just doing internet research, no hands on experience.

Ecostang

I measured from the outside of my tire to the inside of the wheel well and it's 13 3/8" with the spacer. This is measuring around the brace that the bump stop lands on, which I'll cut off when the bump stop relocation kit is installed. The 325mm says it measures 13" across, I think it will fit.

3point7

Makes sense given that the 3.5 is used in the F150. I'm sure you know all to well that a lot of stuff is just off the shelf parts bin. Pretty standard in all car companies now. But the throttle position sensor from the F150 makes the most sense given the engine you're running. You're doing a fantastic job with this car, keep those photos coming.

Ecostang

Thank you!

I wasn't really clear in my post, I had to change the 2010 mustang gas pedal and brake switch to a 2011+ mustang gas pedal and brake switch. Those mustang parts plugged directly in to the F150 harness, I didn't have to grab those from the F150. Your right, I've found a several things that have bolted on or plugged right in between the 2 vehicles. Had I bought a 2011+ mustang there would have been additional things that plugged right in that didn't plug in to the 2010....like the fuel pump driver module for example.

Ecostang

FYI a mustang v6 and GT have different shifter assemblies. I got a gt for free with some other parts, I tried and it didn't work. I bought the v6 shifter assembly and installed it today.

I added a whiteline mount bushing and an aftermarket rear shift bracket. I'll try these first before buying a new shifter. The aftermarket shifters don't include all the linkage so I had to buy the ford assembly anyways.

Ecostang

I got the flange on the rearend changed to adapt to the v6 driveshaft. I torqued the pinion nut and installed the driveshaft. I'm using a factory v6 driveshaft for now, I'll save the upgrade to an aluminum one piece shaft for later.

Ecostang

I thought these wheels were 8.5" wide, I read that everywhere. Mine are 10" wide and they are factory wheels.

Ecostang

I got the new overflow tank mounted. I painted it black to try and maintain a factory look.

LEXiiON

Picture of the engraved specs or it didn't happen

Ecostang

Haha, this is the best I can do with the wheels on the car. I assume Fomoco is "Ford motor company" and not Chinese word meaning wheel manufacturer

jwfisher

Remember that the Ford mule on which the IRS was first photographed was an S197 with the IRS transplanted in.
http://www.drivingenthusiast.net/sec-blog/?p=13173
There were unique non-production brackets made by Ford engineering to mount the IRS subframe. These could be easily duplicated. You'll need a jig to hold the entire assembly in place while you take measurements. The gas tank on the S550 is slightly different, you should check the measurements on this. Rent a 2015 Mustang form Hertz and put it up on a lift. But since the S550 is just an "evolved" S197 - most definitely not an all-new car - this project should be possible with some fabrication and welding skills.
The width shouldn't be a big problem because it fit very well underneath the S197. The S550 is wider, but it also uses different offset wheels.
The front suspension was changed for more anti-dive... that'll be something you will have to do without.
When you drive the S197 back-top-back with the IRS-equipped S550, you immediately realize what a mistake Ford made by leaving the solid axle on the Mustang for the extra 10 years. It couldn't be competitive under any circumstances in this day and age (and if you read the Dec. issues of Motor Trend and Car and Driver, you'll see why). And even the bushing tuning on the over-rated Boss 302 couldn't make up for the inherent problems with the solid axle - whatever you wanted it to do, it does the opposite. Rules of physics.
Good luck with your project and please let us know how it works out.
And what I really want to see after the IRS transplant is an EcoBoost 3.5 transplant. That'll take some much needed weight off the front end and make for a nicely balanced car. And a unique car - it'll be one of a kind until Ford inevitably does it after a few more years.