Will TH350 still work with broken bell housing bolt hole?

Discussion in 'Transmission & Driveline Topics' started by jayfire, Jul 16, 2012.

  1. jayfire

    jayfire Veteran Member

    579
    0
    Jun 26, 2008
    dayton, nevada
    I pulled the 305 out of my 76 parts car and noticed that one of the top bell housing bolt holes is completely gone. Like someone forgot a bolt when they pulled the original motor and tore a chunk out of it. Will it still work if one bolt is not there? Thanks
     
  2. Twisted_Metal

    Twisted_Metal Moderator Lifetime Gold Member

    24,025
    1
    Feb 26, 2004
    Bloomington, MN
    Behind a 305.... It would probably survive forever without further damage.

    If the transmission is getting bolted to something more stout and you plan on some hard launches with sticky tires..... I wouldn't take the chance.

    IMO... Have it repaired by someone who can MIG/drill a new mounting point while it is out of the car.
     
  3. 351maverick

    351maverick Veteran Member

    2,245
    3
    Aug 11, 2010
    erie, PA
  4. black_aerocoupe

    black_aerocoupe Veteran Member

    If you're going to skip fixing it run new bolts with lock washers and use your torque wrench. Ones that back out ruin converters and pumps.
     
  5. muscl car

    muscl car Veteran Member Lifetime Gold Member

    stock yes but anything over that i would mill /cut the bell housing off and install an ultra bell bell hsg



    JW transmissions ultra bell safety bell hsg for turbo 350 ..


    [​IMG]
     
    Last edited: Jul 17, 2012
  6. muscl car

    muscl car Veteran Member Lifetime Gold Member

    $300 for an jw transmissions ultra bell safety bell hsg would be better alternative
     
  7. joeEZ

    joeEZ Veteran Member

    372
    0
    May 29, 2001
    Memphis, TN USA
    Under 400 hp, I would run it as is. As long as the dowels are in the block and the dowel holes in the transmission are not broken. Those are what keeps everything lined up. Get new bolts and lock washers as was mentioned above.

    But if you're going for a drag race thing, you'll need to work that transmission anyway.

    If you had the piece, it'd be different.
     
  8. Twisted_Metal

    Twisted_Metal Moderator Lifetime Gold Member

    24,025
    1
    Feb 26, 2004
    Bloomington, MN
    Unless you have the tools to make a neat chop of the old bell housing... Someone needs to get paid for that work on top of the cost of the ultra bell.

    Budget and intended use are the big factors in the final decision.
     
  9. muscl car

    muscl car Veteran Member Lifetime Gold Member


    sawzall,grinder with cut off wheels and a a couple of the sanding cartridge rolls is all you need . you don't need a machine shop to do this .the instructions give you a template so you know exactly were to cut . quite a few members here have installed ultra bells themselves
     
  10. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

    7,703
    2
    Nov 4, 2004
    Ringgold, GA
    Me thinks that a bit over kill for intended application... :D
     

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