Which Flexplate?

Small Block Mopar Engine

  1. gzig5

    gzig5 FABO Gold Member FABO Gold Member

    Messages:
    224
    Likes Received:
    101
    Joined:
    May 3, 2018
    Location:
    Mequon, WI
    Local Time:
    12:04 AM
    While the trans was out to be rebuilt I found that my flexplate is bent and needs to be replaced. Internally balanced '71 340 with a 727 TF. I'm going to build the engine next year so may as well get a stronger one. The B&M 10230 looks good but seems some folks have had interference issues with the starter? Recommendations or anything to stay away from?
     
  2. MoparMike1974

    MoparMike1974 Well-Known Member

    Messages:
    985
    Likes Received:
    503
    Joined:
    Jun 16, 2017
    Location:
    Maryland
    Local Time:
    1:04 AM
    The B&M's are very good flex plates. I cracked several stock ones. Switched to the B&M and have been using them ever since with no problems. Never heard of anyone having starter interference problems with them. No sure why you would, I believe the OD is the same as stock.
     
    • Agree Agree x 3
    • mderoy340

      mderoy340 Well-Known Member

      Messages:
      1,971
      Likes Received:
      667
      Joined:
      Aug 2, 2012
      Location:
      Melbourne FL
      Local Time:
      1:04 AM
      727 no issues with your flex plate, 904 is where you may run into issues.
       
    • Hellrats

      Hellrats Still wrenching after all these years FABO Gold Member

      Messages:
      837
      Likes Received:
      542
      Joined:
      Jan 24, 2012
      Location:
      N.E. Ohio
      Local Time:
      1:04 AM
      I have been using B&M flex plates for years in both 727 and 904. Never any problem with either one.
       
    • Wyrmrider

      Wyrmrider Well-Known Member

      Messages:
      915
      Likes Received:
      296
      Joined:
      Sep 5, 2016
      Location:
      los angeles
      Local Time:
      10:04 PM
      have you tried the hacksaw through the trailing side of the big holes mod
       
    • gregpurcell

      gregpurcell Greg Purcell

      Messages:
      1,786
      Likes Received:
      74
      Joined:
      Aug 21, 2008
      Location:
      Near Savannah, GA
      Local Time:
      12:04 AM
      B&M flexplates are great for externally balanced engines with torque converter weight issues. On internally balanced steel crank motors, there are only two stock flexplates if you want to go factory. You will have either the 10 inch or the 11 inch. measure your converter and use the correct one. The bolt pattern is the same on big or small block engines and the 4 outside holes are the same on 904 or 727.
      flexplatediff.jpg
       
      • Like Like x 1
      1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
        By continuing to use this site, you are consenting to our use of cookies.