Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 39

Thread: new to me 88 Tbird, pondering brake/wheel upgrades.

  1. #11
    Join Date
    Nov 2016
    Location
    Iowa
    Posts
    128
    Feedback Score
    0

    Default

    my car currently has a 7.5, and with the mustang having a 7.5, can i just swap all bracketry , axle shafts, and disc brake goods onto the axle i currently have under the car? i know an 8.8 would be so much better, but im looking at being able to use the most out of the parts i currently have and will get, and if i come across an 8.8 later, i will swap it then.

    i have a brake lathe at work, if the rotors are anywhere close to being useable, i'll turn them. i'll be going through and replacing all rubber hoses, and i will properly inspect and assess the calipers. thank you for the heads up on the upgraded front calipers.

    while the mustang rims on the car are not my favorite, they will bolt on, and clear fine, correct? They appear to be 16's. i may run them for a bit as i get the other issues on the car sorted out, and then possibly upgrade to 17's for summer driving duties, and keep the 16's for some studded snows to get me through the winter months. I wonder if my Torq thrusts from my Lincoln will fit on the car ...

  2. #12
    Join Date
    Oct 2004
    Location
    Utah.
    Posts
    9,167
    Feedback Score
    2 (100%)

    Default

    The mustang stuff should all bolt up as is or swap onto the existing axle. Most guys run 94-98 brakes and axles to keep the same width rear.

    Any 16" or larger and most 15" rims should clear fine. Id guess the Lincoln would have the right bolt pattern, maybe not offset.
    Quote Originally Posted by jcassity
    I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
    Hooligans!
    1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
    1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
    1986 cougar.
    lilsammywasapunkrocker@yahoo.com

  3. #13
    Join Date
    Nov 2016
    Location
    Iowa
    Posts
    128
    Feedback Score
    0

    Default

    the mustang rear is a 2.73 open 7.5. the Tbird rear is a 3.55 limited slip. so if i get the chance, i'd much much rather just swap the axle shafts and rear brake assemblies onto my current axle, and then just keep a watchful eye for a 8.8 to swap in later.

  4. #14
    Join Date
    Oct 2006
    Location
    Jenks, OK
    Posts
    2,291
    Feedback Score
    4 (100%)

    Default

    So if memory serves me correctly the Fox and SN95 axle housings measure 54' wide and the axle under your car measures 56" wide so the axles out of a Mustang rear will not work with a standard T-Bird rear. This thread has a lot of good info in it that has been gathered up over time:

    http://www.foxtbirdcougarforums.com/...ring-Fox-Axels

    So with that said you can sell the 7.5 limited slip and gears for a pretty good chunk of change either on here or on www.foureyedpride.com. I strongly suggest you find a Fox 8.8 with gears in it (saw one on www.okdhm.com the other day with 3.73's or 3.55's for $200 drum to drum.

    Another option would be to have the 3.55's and limited slip put into the SN95 rear but the rebuild kits for the 7.5 limited slip are hard to find and very pricey.

    Another good thread currently going on rebuilding an 8.8 on a member's car is here:

    http://www.foxtbirdcougarforums.com/...or-my-88-sport

  5. #15
    Join Date
    Nov 2016
    Location
    Iowa
    Posts
    128
    Feedback Score
    0

    Default

    so it sounds like my best bet for the time being is to hang the mustang 7.5 under the car, live with the highway gears for the time being, and keep a watchful eye out for an 8.8. We're all in agreement there?

    do i need to run a pair of 1" spacers to maintain the proper track width, or is it so small that it's hardly even noticable?

  6. #16
    Join Date
    Oct 2004
    Location
    Utah.
    Posts
    9,167
    Feedback Score
    2 (100%)

    Default

    Im confused as to why a 3.8 car would have 3.55's. Maybe 3.27 with the towing package? Does it have the smooth 10" drums?
    Quote Originally Posted by jcassity
    I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
    Hooligans!
    1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
    1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
    1986 cougar.
    lilsammywasapunkrocker@yahoo.com

  7. #17
    Join Date
    Oct 2006
    Location
    Jenks, OK
    Posts
    2,291
    Feedback Score
    4 (100%)

    Default

    That is what I would recommend based on my experience. What you have to understand is that the measurement where the rims bolt up to the rear end between the 94-98 SN95 Mustang rear end versus the rear end in your T-Bird is that the SN95 rear end is 1/4" shorter on each side. Most folks just throw the SN95 rear under the car, bolt the rims up and go.

    Little history for you. The 86-93 Fox Mustang 8.8 housing is the same as the 94-98 SN95 8.8 housing in width. Where the SN95 cars get the additional length is in the axles themselves. This is due to these cars having ABS and needing the additional 3/4" per side to allow for the ABS exciter rings on the axles. If the rear end you get has the ABS exciters on the axles and you do not retrofit your car with ABS then you do not have to take the rings off as they tuck behind the rotor and are out of the way.

  8. #18
    Join Date
    Nov 2016
    Location
    Iowa
    Posts
    128
    Feedback Score
    0

    Default

    So, im reading this info on Coolcats http://www.coolcats.net/modifying/4to5lug.html

    im seeing that they are saying to swap the tie rod ends to accommodate the 98 spindles?? so, do i need to just get new inners and outers, and they will mate up to my existing rack? or can i run the original 87 stuff??

    Also, I know Aerocoupe suggested stepping up to the 99- up calipers to get the dual piston setup, and obviously i would run the 99 pads, but can i run my 98 rotors, or do i need to get 99 rotors to go with that setup?

    Another thing that crossed my mind, do i need to nab the master cylinder off of the parts car as well to accommodate the 4 wheel disc?

  9. #19
    Join Date
    Oct 2006
    Location
    Jenks, OK
    Posts
    2,291
    Feedback Score
    4 (100%)

    Default

    The 94-98 front rotors will work with the 99 calipers. You need the 93 Cobra MC and Booster. To utilize the SN95 spindles you will need longer outer tie rods. The SN95 stuff is all metric thread and the Fox cars (Mustangs, Birds, Cougars) are SAE thread. I believe there are Taurus outer tie rods that will work. Do a search on this for the Fox Mustangs swapping to the SN95 spindles and it will come up. Hell, do a search on here and you will probably find the answers this as it's been covered a couple of times.

  10. #20
    Join Date
    Nov 2016
    Location
    Iowa
    Posts
    128
    Feedback Score
    0

    Default

    the more i look, the deeper down the rabbit's hole this project will seem to go.

    am i better off pressing new 98 mustang lower ball joints into my LCA? A front end rebuild was in the plans, and so maybe right now is the time to do so. it looks like otherwise i may be looking into putting a spacer in to get correct cotter key engagement.

    I have read plenty of fox body mustang threads, half the guys claim they use bumpsteer kits, the other half use stock fox body tie rods. I searched this forum and have not yet found a thread mentioning using any other tie rods. I guess i could just play it by feel, and when i get the spindles on, and the tie rods dont adjust out enough, maybe i will swap to the 98 inners and outers at that point.

    i donno. my heads starting to spin. maybe its time to go play some Donkey Kong.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •