1) 87-88 Turbo Coupes had the 8.8 rear end that was the same housing width as the 86-98 Mustang 8.8 housing and were disc brake.
2) The 88 XR-7 Cougar had a drum brake 8.8 that was the same width as the Turbo Coupe rear end from axle flange to axle flange but the housing is the same as the 86-98 Mustang 8.8 housing and not very common.
3) There were some 87-88 Thunderbirds that had an 8.8 with drum brakes but I believe the housing was wider like the 7.5" housings.
I looked at the chart and the XR-7 is not discussed not is any type of 8.8 drum brake rear end.
Checked out the ECU to make sure it connected to the laptop fine, and reinstalled the ECU and the battery.
Got it fired up a couple days ago, but haven't had a chance to get it out for a drive yet, but that's coming soon.
Ready for a new season.
On paper it works perfectly, but I had to put small spacers to get the disc and caliper to properly align IIRC.
I have postulated that MAYBE you could use the 99-04 axles and brake set up on your wide 7.5 housing in your Sport. The numbers are really close. At least according to the chart.
You would need to swap to the rear discs though, and your flange to flange width would be 1.5" wider.
This is all just a guess though.
If you're keeping the drums, you'll need to either have your current axles converted to 5-lug or buy new, custom ones and use some Ranger drums.
94-98 Axles won't work in your wide housing. The bearing surfaces are in the wrong location. If your car was an 83-85, you'd have the narrow housing that would work with the 94-98 axles.
I had/have what amounts to the same setup on both my Thunderbird and now on my '87 Mustang. Up front is the dual piston calipers,
On my 'Bird I had a bastard setup....used the stock Tbird Sport's backing plates, '97 Stang V6 axles (again, no matter if it's V6 or V8, the shafts themselves are the same), but I kept that car drums, and used Mercury Marquis drums, these were 10" drums and not the usual 9". With that setup, I HAD to have the Sport's back plates, all others were 9" drums, so....there's *probably* a way, but with all the Mustang shit in the yards now, no reason not to step up to dscs. I just did it to see if it could be done.
Now in my Mustang, I ran Ranger axles and kept the stock drums. There was no way to make a hybrid system as the axles are too short for that setup.
When I get the T5 rebuilt, I'll probably be swapping to discs and throwing a 3.73 in with a new Trac Lok.
BTW, if you've not ran the PBR calipers yet, holy shit, you'll feel like you're going to leave your teeth in the steering wheel.. LOL
You do realize that the 94-98 GT and V6 cars have the exact same brakes, right? In the rear the axles, brackets, dust shields, and calipers are the same. Only difference is the housing in that one is for the 7.5 ring gear and the other is for the 8.8 ring gear. As for the front they are straight across the same. I pulled both my swaps from V6 cars being I already had the 8.8 housings and was converting from drum brakes.
Why I didn’t notice the Dual caliber, I don’t know.
But my question is can I still use this axles (30.75)length in my 88 sport. ( that salvage yard and hour drive and I would rather not make the trip again if I don’t have too plus a lot of seized bolts)