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Thread: Compatibility 1990 SC engine and 1995 SC engine.

  1. #1
    Join Date
    Apr 2018
    Location
    Ontario
    Posts
    36

    Compatibility 1990 SC engine and 1995 SC engine.

    Hey all,

    Have my 1990 SC, and looking at rebuilding and installing a 1995 SC engine in it. I know things changed over the years, question is, would it be a direct swap over, or is there re-pinning, module swapping, etc to do. Both cars are manual cars.

    Any insight is appreciated!

    James

  2. #2
    Join Date
    Dec 2007
    Location
    Salem OR
    Posts
    7,017
    James:

    Do you want to take the path of least resistance and just bolt things back in, or do you want to try to make a '95 out of your '90?

    I think if you just stick to the built block w/heads you won't have any issues.

    If you want to run the 95's larger injectors to take advantage of the better intake/supercharger things get tricky, but doable. If you want the improved late model exhaust manifolds you'll need to modify the '90's system, or install the 95's system and fuel tank.

    Some FYI internal diffs noted in this thread if you're curious: http://www.sccoa.com/forums/showthre...+block+changes - all good news in your example.

    Ken
    Last edited by KMT; 03-10-2019 at 11:48 PM. Reason: added link

  3. #3
    Join Date
    Jul 2002
    Location
    Roanoke, Virginia
    Posts
    3,325
    The long blocks are interchangeable. Use your 90 front cover, balancer and the 90 electronics (DIS module) and you'll be fine.

    -Tim
    Current Collection
    1994 Thunderbird SC - Auto converted to 5spd

    1995 Thunderbird SC - Auto

    1994 Thunderbird SC - 5spd
    1989 Thunderbird SC - 5spd - Daily Driver
    1990 Thunder/Cougar XR7 - 5spd
    1994 Thunderbird SC - 3v Project

  4. #4
    Join Date
    Aug 2005
    Location
    Paoli Indiana
    Posts
    4,742
    Quote Originally Posted by Tim Groth View Post
    The long blocks are interchangeable. Use your 90 front cover, balancer and the 90 electronics (DIS module) and you'll be fine.

    -Tim
    I just went through this 95 to 90 swap and I am pretty sure the late model cover will work with the early ballancer and crank sensor
    93 SC Red Aod 4.2/2.3lwhipple 422rwhp 11.360
    2013 Shootout Bracket ET First Place
    2015 Shootout Car Show Honerable Mention
    2016 Shootout Mod-1 First Place
    2018 Shootout Pro Street Runner Up
    Coming soon new motor 2300 TVS etc..
    90 35th aod stock, 90 5 speed Bolton Build in progress

  5. #5
    Join Date
    Jul 2010
    Location
    Peterborough Ontario
    Posts
    170

    90 to 95 compatibility

    Very hard to find replacement early model crank sensors now?
    Might be good time to update?

  6. #6
    Join Date
    Nov 2010
    Location
    Northern New Jersey
    Posts
    2
    Amazon has the crank sensors for around $70 now. I think they are coming from carid.

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