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Thread: Alternative to Delco 27Si alternators

  1. #11
    Sergeant Major
    Join Date
    Aug 2007
    Upstate NY
    Thanked 52 Times in 41 Posts


    Outfit called Amsco Valley Forge (In NY) may be worth looking into. We do vintage auto and restorations and occasionally use them. One of our mom and pop parts suppliers was looking for a leece neville and i gave him the link and turned out they had it!

    Their techs are also really decent!


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    Sharecropper (12-28-2018)

  3. #12
    4 Star General Keith_J's Avatar
    Join Date
    Aug 2009
    Schertz TX
    Thanked 772 Times in 541 Posts


    You can get drop in fit 12 volt Prestolite/Leece Neeville 140 amp alternators which should fit the 27Si mounts. Even have isolated negatives and indicator lamp support.

    If they were only less than $200 each.

    The Delco 27SI have an SAE J180 mount. Of course you have to find the pulley and belt to match. Most Leece Neeville/Prestolite have isolated negative plus adjustable voltage.
    Last edited by Keith_J; 12-29-2018 at 07:30.
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

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    MarcusOReallyus (12-28-2018), Rutjes (12-28-2018), SCSG-G4 (12-28-2018), Sharecropper (12-28-2018)

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