Fox Rear Main 1 Or 2 Piece

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by 90lxwhite, Feb 10, 2014.


  1. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    I know ive asked before and just got done doing a google search and I got both answers. Does 302 have 1 piece or 2 piece seal? Please help

    Mike
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  2. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    both are available
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  3. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    What came stock? It is an aod if that matters. I read that if its a 2 piece its eaiser to change due to motor not having to be lifted, any truth in that?
    #3
  4. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    i think Ford changed to the one piece in the early eightees. Tranny needs dropped or motor needs pulled to replace the rear main. Are you certain its leaking? Do you have a functional pcv system?
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  5. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    Yeah PVC. Not 100% its rear main but leaking in area
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  6. madspeed

    madspeed Colonel Mustard Mod Dude Founding Member

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    oil pan gasket is more prone to leaking in that area
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  7. revhead347

    revhead347 I have face herpes.

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    I believe it's 86' and newer is a 1 piece, older is a 2 piece.

    Kurt
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  8. 02 281 GT

    02 281 GT Active Member

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    I know for a fact that my '86 5.0 had a one-piece seal. I changed it when I swapped trannies.
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  9. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

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    Older 5.0's had the 2-peice, and the newer ones went 1-peice. I beleive the 1-piece will retroactively swap into older cars though...not sure.

    If we knew the year of the 302 in question, we could give a better answer. If it's a '87 or later, definitely 1-peice. Not sure when the swap to the 1 peice happened, but i wanna say early. 1984ish?
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  10. revhead347

    revhead347 I have face herpes.

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    I know it's somewhere around there. I know Chevy updated their small block in 1986; maybe that's where I'm getting that date from. I know the two seals are not interchangeable. The local engine builder offers the service of updating the older engine to a one piece design by machining it some how.

    Kurt
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  11. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    1990
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  12. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    Yeah?
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  13. Grabbin' Asphalt

    Grabbin' Asphalt Mustang Master

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    Last edited: Feb 11, 2014
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  14. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

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    1990 5.0 was 1-peice.
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  15. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    Thank you
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