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Technical which way does a flex plate go?

Discussion in 'The Hokey Ass Message Board' started by cobalt333, Oct 25, 2015.

  1. I put the weights to the engine side so you dont see this right? oh and this is a 455 olds engine..thanks

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  2. saltflats
    Joined: Aug 14, 2007
    Posts: 10,688

    from Missouri

    If the center hole has a bevel on it it would point away from the crank.
  3. Once the bellhousing / transmission is on you won't see the weights looks like a adapter kit. Follow the instructions or call the manufacturer. If it's wrong you'll have starter engagement issues, or the convertor may get pulled out too far when the convertor to flexplate bolts/nuts are tightened down
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 48,314


    looking at the picture of the flexplate off the engine, it looks like there is evidence that the bolt heads were on the side that is "up". and then you installed it the other way on the engine.

    How does the converter fit on it they way you have it on the engine now? Do the pads contact the flexplate when the converter pilot is all the way in the end of the crankshaft?

  5. i have two flex plates that were given to me your seeing one of them on and the other i have laying next to engine didnt have one on it when i got it as it was used in a boat..i will check to see if it has a bevel on the center hole...i just thought there was a standard of weights in or out on install
  6. squirrel you were right...looked at the second flex plate and saw bolt head impressions on the weights i found a picture on the internet its weights out toward trans...not towards engine....thanks

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  7. I thought that the bolt hole spacing dictated how the flexplate is installed?
  8. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,028


    Yup. They might look symmetrical, but they cannot be, on an externally balanced engine.
  9. keyster
    Joined: Dec 27, 2011
    Posts: 26


    Take a look at the ring gear.
    One side should have relief cuts for the starter drive gear.
  10. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695


    Interesting that the weight faces the trans; in Chevrolet's, the weight faces the engine (400 SBC, 454 BBC). The position of a dowel locating pin hole would help, as does the presence of a bevel that always faces away from the engine; otherwise, the flexplate would't seat flat against the crank, and would be stressed. I am Butch/56sedandelivery.

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