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3789733 Chevy flywheel

Discussion in 'The Hokey Ass Message Board' started by roundvalley, Aug 5, 2010.

  1. roundvalley
    Joined: Apr 10, 2005
    Posts: 1,530


    I have a 168 tooth, 14" Chevy flywheel #3789733. A 10.5" pressure plate will not bolt to it. I am guessing it is for a big block. ??

    What flywheel do I need for a Ram 401 pressure plate 10.5", 168 tooth, SBC 350??

    Did they make a 14" flywheel 168 tooth with a two different pressure plate bolt patterns??

    Can't find the answer searching.
  2. roundvalley
    Joined: Apr 10, 2005
    Posts: 1,530


    How about a 3991469 or a 3986390?? Anyone know the difference?

    Someone must have solved this with a SBC to earlyFord tranny. Offy adapter.
  3. Deuce Roadster
    Joined: Sep 8, 2002
    Posts: 9,520

    Deuce Roadster
    Member Emeritus

    I used a 1950 Mercury pressure plate. That is what Wilcap says to use also :D
    The bolt pattern on the 50 Mercury pressure plate is 6 evenly spaced holes and bolted to my 1957 Chevrolet 168 tooth flywheel.


    Used a stock Ford clutch disc.
  4. Model A Vette
    Joined: Mar 8, 2002
    Posts: 1,008

    Model A Vette

    "378" numbers were used up to about 1964 so I doubt that it is for a big block unless it was for a "W" engine.
    I think all the Chevy 168 tooth flywheels used 11" clutches.
    The only GM dual pattern flywheels I've seen are for the later '86 & up cranks.
    There may be aftermarket flywheels with dual patterns.
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  5. Chevy55
    Joined: Nov 6, 2008
    Posts: 406

    from Nebraska

    Aftermarket flywheels for Chevys come dual drilled for both clutches. Watch ebay for one or get ready to spend $200 plus for one. I do have a gm 168 tooth that is drilled for the 10.5 clutch 3728004 but I have no idea what it is off of.
  6. chucky stampfle
    Joined: Nov 12, 2009
    Posts: 19

    chucky stampfle
    from new york

    My 57 chevy has a 168 tooth fly wheel for a 10.5 inch clutch
    try 55-7 chevys

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