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Technical 1937 flathead distributor conversion

Discussion in 'The Hokey Ass Message Board' started by ratrodjay, Mar 14, 2015.

  1. ratrodjay
    Joined: Aug 28, 2007
    Posts: 104

    ratrodjay
    Member
    from Corona, CA

    Hey all, I am going to install the 1942-1948 "crab" distributor on my 1937 21 stud flathead. I have the 2 bolt front cover, distributor, wires and looms. Am i missing anything? Is their any special adapters in need for the install?

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  2. Jimmy2car
    Joined: Nov 26, 2003
    Posts: 1,707

    Jimmy2car
    Member
    from No. Cal

    JAY
    You may need the distributor adapter "thingie". It's a small piece that goes in between the cam and the distributor. I can't remember what it's called.
    Perhaps someone here will know? Or, post this question on the Fordbarn. For sure, someone will know. Wish I could remember
     
  3. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 3,285

    ROADSTER1927
    Member

    Speedway has the mounting plate adapter you need. Gary:)
     
  4. ratrodjay
    Joined: Aug 28, 2007
    Posts: 104

    ratrodjay
    Member
    from Corona, CA

    Would i still need it even with the 2 bolt front cover?

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  5. Gene Boul
    Joined: Feb 9, 2006
    Posts: 805

    Gene Boul

    No! Just remember the two bolt dizzy's are uni directional don't force it. If it won't go its probably because its 180 out.
     
  6. ratrodjay
    Joined: Aug 28, 2007
    Posts: 104

    ratrodjay
    Member
    from Corona, CA

    Ok, thanks for all the help. I did see a 2 bolt adapter on van pelts website...supposedly for a 2 bolt distributor and 2 bolt front cover on a 1937 V8 with the 1932-193? Long nose cam. I think i might need it...I'm not 100% sure yet.

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  7. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 3,285

    ROADSTER1927
    Member

    P3140005.JPG P3140006.JPG P3140007.JPG P3140008.JPG This is my 37 flathead with the adapter plate you need for a 3 bolt to 2 bolt conversion. Gary
     
  8. flatjack
    Joined: Feb 13, 2007
    Posts: 981

    flatjack
    Member

    You absolutely need that spacer as the nose on the 42 distributor is longer then your 37.
     
  9. alchemy
    Joined: Sep 27, 2002
    Posts: 22,668

    alchemy
    Member

    When you have the two-bolt cover, basically all you need is a spacer. If you want to leave the three-bolt cover in place, you can run a two-to-three adapter which will also do the spacing at the same time. Either version of spacer or adapter is available from Speedway and probably a hundred other suppliers.

    Or, maybe you want to check and see if you have a 59A style cam in there now (most hot rod grinds were on the later cams, not the early style). If so, there is probably the small ****on with the groove and tang behind the distributor. If you have a later cam you can just install the two-bolt cover and distributor (leaving out the ****on this time) as if the whole thing was a 59 engine.
     

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