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Thread: Trade non cb under drive pulley for cb under drive pulley

  1. #1
    turbo addict
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    Trade non cb under drive pulley for cb under drive pulley

    I have a non common block under drive pulley and would like to trade it for a common block under drive pulley. No belts just the pulley. Its an 88 5 bolt pully. Anyone interested?

  2. #2
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: Trade non cb under drive pulley for cb under drive pulley

    Is there any way to tell for sure the difference between a CB and '88 non-CB UDP? (both 5-bolt)

    I bought a UDP from FWPD recently for a '84-'87 non-CB engine, but as it turned out I got a 5-bolt pulley. I probably should have sent it back to get the right one, but hey, I'm lazy.

    I actually DO have an '88 block waiting to be built, so I would not mind having that '88 5-bolt UDP...

  3. #3
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    Re: Trade non cb under drive pulley for cb under drive pulley

    Quote Originally Posted by iTurbo View Post
    Is there any way to tell for sure the difference between a CB and '88 non-CB UDP? (both 5-bolt)

    I bought a UDP from FWPD recently for a '84-'87 non-CB engine, but as it turned out I got a 5-bolt pulley. I probably should have sent it back to get the right one, but hey, I'm lazy.

    I actually DO have an '88 block waiting to be built, so I would not mind having that '88 5-bolt UDP...
    look at the knowledge center about the crank sprockets. The I'd of mine is bigger where it goes around the snout then what a common block is. If that makes any sense

  4. #4
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    Re: Trade non cb under drive pulley for cb under drive pulley

    Yeah Jeremy the crank snout hole is smaller on the CB. Your CB should be around 25mm hole while the early is around 29mm.
    Todd

  5. #5
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    Re: Trade non cb under drive pulley for cb under drive pulley

    Let me know which one you have if its common block we could def work out a deal

  6. #6
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: Trade non cb under drive pulley for cb under drive pulley

    just looked and it appears I already have one of each. one 25 mm hole amd one 29mm. Sorry for the confusion.

  7. #7
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    Re: Trade non cb under drive pulley for cb under drive pulley

    Quote Originally Posted by iTurbo View Post
    just looked and it appears I already have one of each. one 25 mm hole amd one 29mm. Sorry for the confusion.
    Wanna sell the cb one

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