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    Author Topic: Bolt size for large center bolt of crank pulley.  (Read 545 times)

    Offline 74 challenge

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    Bolt size for large center bolt of crank pulley.
    « on: June 13, 2015 - 08:45:10 AM »
    Hi guys

    I need to turn my engine over and need the crank pulley bolt size for a 74 318 engine. Anyone know it? I need to pick up a socket today.
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    Offline JayBee

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    Re: Bolt size for large center bolt of crank pulley.
    « Reply #1 on: June 13, 2015 - 08:54:17 AM »
    I can tell you this, my 1970 318 is a 1 1/4, I just came in from the garage checking it with my socket.
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    John

    1970 Barracuda convertible
    2014 Toyota Avalon

    Offline 74 challenge

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    Re: Bolt size for large center bolt of crank pulley.
    « Reply #2 on: June 13, 2015 - 09:34:22 AM »
    That makes sense I have a 1 1/16 and it's too small and a 1.5 that's too large.
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    1-8-4-3-6-5-7-2

    Offline Chryco Psycho

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    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: Bolt size for large center bolt of crank pulley.
    « Reply #3 on: June 13, 2015 - 09:37:54 AM »
    The factory bolt is always 1.25 " / 1 1/4"
    if you use a non factory bolt the bolt head is smaller
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    Challenger - You`ll wish You Hadn`t
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