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Thread: 8.8" swap SN95 vs Lincoln Mark 7

  1. #1
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    Default 8.8" swap SN95 vs Lincoln Mark 7

    88 sport with a turbo coupe 8.8" in it now. Want to go to 5 lug swap. SN95 axles are the same length as turbo coupe but the Lincoln Mark 7 axles are 3/4" longer then the turbo coupe axles (i know I will have to swap calipers and hardware). I am looking from a stock Mustang 5 lug wheel option (2007-2009 GT500 wheels) at this point for best fit into the rear wheel wells. I see some people have to use wheel spacers with the Mustang SN95 rear axle swap to make the wheels sit properly.
    1988 Thunderbird Sport. No engine, no trans, turbocoupe disk diff with 3:27 gears, 31 spline axles and Cobra clutch packs, Turbocoupe front brakes.

    Bought this car back as an old project car.


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    I'm curently mid-swap into putting an SN95 8.8 under my 87 T, to run 09 "bullit" wheels. i'll let you knowwhat i find out

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    So any SN95 rear axles (8.8 & 7.5 as they are the same damn axles) will work with the SN95 swap. If you already have the TC housing then just go to a salvage yard and tell them you want from the axles out on a 94-98 SN95 V6 Mustang (dust shields and all) and they will sell it to you unlike the axles out of an 8.8 housing. Same width and the brake parts for an SN95 Mustang are a bit more readily available and have a lot more aftermarket support than the Lincoln.

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    Quote Originally Posted by Aerocoupe View Post
    So any SN95 rear axles (8.8 & 7.5 as they are the same damn axles) will work with the SN95 swap. If you already have the TC housing then just go to a salvage yard and tell them you want from the axles out on a 94-98 SN95 V6 Mustang (dust shields and all) and they will sell it to you unlike the axles out of an 8.8 housing. Same width and the brake parts for an SN95 Mustang are a bit more readily available and have a lot more aftermarket support than the Lincoln.
    What do you mean aftermarket support? Are you saying that I get more options of rear brakes with a SN95 then a Lincoln? Right now the axles I have are 31 spline so I will have to buy either 31 spline SN95 axles or replace the spiders to 28 spline. I am looking to the Lincoln Mark VII parts so I can put the wheels on without needing 1" spacers on the rear. With the SN95 being the same axle length as the TC it will just be a 5 lug swap but not the length I am looking for.
    1988 Thunderbird Sport. No engine, no trans, turbocoupe disk diff with 3:27 gears, 31 spline axles and Cobra clutch packs, Turbocoupe front brakes.

    Bought this car back as an old project car.


  5. #5
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    That’s what I am saying.

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    Well, he wants the axles to be longer then stock. Stock length is 94-98 mustang. Longer length is 99-04...
    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

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    I want to say that the later Mk7 rear brake stuff (91-93?) is the same as the TC brakes. Different rotors/calipers, etc.

    The difference in width between the 94-98 SN95 width and the early Mk7 is closer to 1/2" per side.

    99-04 Mustang axles are longer, but the housing is also much wider.

    Seeing as you have to find or order axles, why not have some made with the longer length you want and fab up an adapter bracket to move the brake caliper attachment outboard a bit and use the more up-to-date SN95 rear brakes, or reuse your TC stuff?
    Long live the 4-eyes! - '83 Tbird Turbo

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    With regards to the OP wanting longer axles, go SN95 and get wheels with the correct offset and problem solved. No need to complicate things and have a mix and match parts nightmare for a rear end.

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    There's probably multiple ways to do it.

    He's already got 31-spline axles, as he's done some work in the diff, so he's doing to need to get new axles anyway to go to 5-lug. That, or he remods his diff to accept other 28-spline axles.


    To me, coming up with a spacer to correct the rear brake mounting is a minor thing. Especially if it avoids having to use the antiquated Lincoln/SVO rear brakes.

    I don't know what the wheel offset of the wheels he wants to use but *maybe* using a 99-04 rear axle assembly would put things in the proper spot. The stickied post regarding axles/housing dimensions has the measurement info for those assemblies.
    Long live the 4-eyes! - '83 Tbird Turbo

  10. #10
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    Good read, not sure it answers the question but some good info.

    https://forums.corral.net/forums/gen...ra-brakes.html

    I can vouch for Chris Neighbors. This guy is a millwright and one hell of a machinist/fabricator. He rebuilt my T-5 back in 2007ish when I lived in SE Texas and I have abused the hell out of that trans.
    Last edited by Aerocoupe; 08-09-2018 at 09:18 PM.

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