BBC 454 flexplate ?'s
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BBC 454 flexplate ?'s

  1. #1
    Senior Member 2savage4you's Avatar
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    Default BBC 454 flexplate ?'s

    the weight from the flexplate seems to be touching my motor plate . Can i just flip the flexplate around and put the weight to the outside?

    I dont even know if i have the right flexplate for my engine, i bought it off Craigslist and it came with no flexplate.....

    I will post a pic or two to give you a better example of what im talking about

    2sav
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    Senior Member 2savage4you's Avatar
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    My set up

    It hits

    you can see the clearance, but when i bring it around it hits the plate... Im starting to wonder if maybe its just warped.

    2sav
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    Member Jet Hydro's Avatar
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    "NO" Just get a 4" grinder and clean off a little on the engine plate "or" take it and have someone mill it down a little
    I would mill it but if your short on money you can just clearance it With a hand grinder.
    "OR" get a jigsaw and cut off the extra off the engine plate
    Better to be an "Innovator" than a "Duplicator"
    Precision Speed & Marine
    Aggressor Jet Drives


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    Quote Originally Posted by 2savage4you View Post
    the weight from the flexplate seems to be touching my motor plate . Can i just flip the flexplate around and put the weight to the outside?

    I dont even know if i have the right flexplate for my engine, i bought it off Craigslist and it came with no flexplate.....

    I will post a pic or two to give you a better example of what im talking about

    2sav
    I looked at my flexplate and it appears to me that it can't be flipped around because I don't think it will line up with the starter correctly.

    I'm not sure if BBC flexplates have different bolt patterns or not but I am sure that the 454 is externally balanced and the others (396, 427) are internally balanced. I think you at least need to make sure you have a flexplate for a 454. I am also not sure if 396/427 flexplates have a weight on them or not.

    Wow, that is a lot of help. At the very least I need to go look at my BBC to see if I can install the engine mount plate after the flexplate is installed.
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    Owner/Crew Chief 1/4 Miler's Avatar
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    We run a 0.250 inch Al spacer ring between the crank butt and the flywheel/flexplate ... starter is mounted/positioned accordingly.
    Last edited by 1/4 Miler; 06-22-2008 at 05:39 PM.
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    Quote Originally Posted by hotrod56cars View Post
    I looked at my flexplate and it appears to me that it can't be flipped around because I don't think it will line up with the starter correctly.

    I'm not sure if BBC flexplates have different bolt patterns or not but I am sure that the 454 is externally balanced and the others (396, 427) are internally balanced. I think you at least need to make sure you have a flexplate for a 454. I am also not sure if 396/427 flexplates have a weight on them or not.

    Wow, that is a lot of help. At the very least I need to go look at my BBC to see if I can install the engine mount plate after the flexplate is installed.

    I think its the flexplate i got from Riverdad with that "468" that was really a 396 .060 I think.... Remember that one Rod?

    I think maybe i should just buy a new one, this set up has been run before with no grinding on the plate for clearance. I think that will be my last resort

    2sav
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    Senior Member 2savage4you's Avatar
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    Quote Originally Posted by 1/4 Miler View Post
    We run a 0.250 inch Al spacer between the crank butt and the flywheel/flexplate.

    Where can i find one of them dooo hicky thingy's

    2sav
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    Quote Originally Posted by 2savage4you View Post
    I think its the flexplate i got from Riverdad with that "468" that was really a 396 .060 I think.... Remember that one Rod?

    I think maybe i should just buy a new one, this set up has been run before with no grinding on the plate for clearance. I think that will be my last resort

    2sav
    Do not use a 396 flex plate on a 454. Internal vs external balancing.
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster
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    Quote Originally Posted by 71hallett View Post
    Do not use a 396 flex plate on a 454. Internal vs external balancing.
    X2







    (I just wanted to post the smiley.)
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    Quote Originally Posted by 71hallett View Post
    Do not use a 396 flex plate on a 454. Internal vs external balancing.

    Yeah, i know... I just dont remember if it was or not..........Went thru alot of BBC's recently and got some parts spread out, I think im better off buying a scat flexplate and be done with it

    This way i know for sure.........

    2sav
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    Quote Originally Posted by hotrod56cars View Post
    X2







    (I just wanted to post the smiley.)


    ROCK ON BROTHER.............

    2sav
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    Does that other flex plate fit?
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    Quote Originally Posted by 2savage4you View Post
    Yeah, i know... I just dont remember if it was or not..........Went thru alot of BBC's recently and got some parts spread out, I think im better off buying a scat flexplate and be done with it

    This way i know for sure.........

    2sav
    I couldnt even tell you by looking at them either. Not totaly up on it but I would also think that a plate like tci or something might not flex as much aswell. (no converter holding it straight) Is this even a factor on something like this?
    Quote Originally Posted by gn7 View Post
    It would be a balmy 85* in Steel's shop if he would move a little faster
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    Quote Originally Posted by Pw_Tony View Post
    Does that other flex plate fit?

    Later on when it cools off i will go check, I actually forgot about that one

    I got alot more chit done to it today, this bitch is getting close.
    Thanks tony.

    2sav
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