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Thread: Proper fly wheel

  1. #1
    Member A1Avette79's Avatar
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    Corvette(s)
    1979 White Coupe

    Default Proper fly wheel

    What is the proper fly wheel diameter and tooth count for a '79 with Hydramatic automatic transmission? Is there any advantage to aluminum vs steel?

  2. #2

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    '67 Marina Blue Convertible

    Default

    Quote Originally Posted by A1Avette79 View Post
    What is the proper fly wheel diameter and tooth count for a '79 with Hydramatic automatic transmission? Is there any advantage to aluminum vs steel?
    Automatics don't use a flywheel - they use a stamped steel flexplate the converter bolts to; your flexplate is 12-3/4" in diameter and has 153 teeth.

    John
    '67 Convertible

  3. #3
    Member A1Avette79's Avatar
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    Thanks John. I was confused - Ecklers shows a larger diameter and higher teeth count for my car but other sources were showing a 153 teeth count with the 12 3/4 diameter.

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