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rebuilding a flathead

Discussion in 'The Hokey Ass Message Board' started by 29cabby, Apr 13, 2011.

  1. 29cabby
    Joined: Dec 6, 2009
    Posts: 41


    Just wanted to see if anyone had a price on what it would take to rebuild a flathead and where there is a good place to purchase a kit from. any information??
  2. kwmpa
    Joined: Mar 14, 2006
    Posts: 1,241

    Member Emeritus
    from Pa

    Kind of an open ended question what kind of engine are you building stock or hopped up? Also might wanna have your block checked for cracks before you spring for parts. I've had flatheads rebuilt from $2000-16000(yes you read that right)
  3. tig master
    Joined: Apr 9, 2009
    Posts: 416

    tig master
    from up north

  4. barry wny
    Joined: Dec 31, 2009
    Posts: 451

    barry wny

    I have a 21 stud that almost have $1500 into, but a lot of parts were NOS stuff bought cheap on the 'bay. New parts for a 21 stud would go around $2500. A late motor parts less than half that.
    Boiled block bored with 3 cast sleeves & top decks smoothed $500
    1 main egged, honed correct & grind crank $200
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  5. RAY With
    Joined: Mar 15, 2009
    Posts: 3,133

    RAY With

    I had a custom flatty done turn key $6,500 > Depends on what all you want done.
  6. dodored
    Joined: Feb 5, 2007
    Posts: 614

    from Concord NC

    Keep in mind that a flathead is obsolete for a reason. I built mine in my '34 pickup and it was about $2800 with all the "good buddy" deals I could muster. Its time comsuming, as you must locate parts and then shop for the best prices on them. Don't expect SBC results, but I would say that it was worth the effort. Be patient, look for the best core you can and ask a lot of questions.

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  7. Mr48chev
    Joined: Dec 28, 2007
    Posts: 25,201


    When I redo the one I have I figure that I'll have more in it than I have put into the whole car on earlier projects.

    But we are talking complete from the bare block just out of the hot tank up rebuilds with all the machine work and all new or reworked parts along with a lot of special parts added in.

    Most of the guys are figuring in the heads, intake and carbs in their calculations I would imagine and certain heads can double the cost of the build real quick.

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