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Thread: Flex Plate Nuts on a 170 Engine

  1. #1

    Flex Plate Nuts on a 170 Engine

    I'm trying to pull the flexplate off the back of a 170 CID engine. The nuts that are holding it on won't budge though. I've tried all kinds of PB Blaster and Liquid Wrench and a big breaker bar with a cheater pipe attached to it. Any chance these nuts are reverse threaded or something?

    Thanks for any info!


  2. #2
    Join Date
    Dec 2006
    Mill Creek

    Flex Plate Nuts on a 170 Engine

    Not seeing much response from anyone on here, so I went to google and looked up this problem. You are not alone for sure. I know my son who is a mechanic has said to use a strong impact gun with 6 point impact sockets.
    If that doesn't work, try going to google and look at the many responses on this. One even used the socket, breaker bar, pipe and a floor jack to really put pressure on the nuts. Worked for him. Sorry Andrew that I am not more help. Larry
    Larry Smith
    1964 Futura
    347 stroker

  3. #3
    Thanks for the info Larry. Good to know that I'm not alone in my struggle.

    I'll keep at it. Haven't tried an impact wrench. But I might be borrowing my friend's impact this weekend!


  4. #4
    Hey! Good news....I got that pesky flex plate off my old engine.

    The secret weapon I used was some Kroil. Works way better than Liquid Wrench or PB Blaster. I also had the help of the biggest cheater bar I could find too.



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