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Has anyone replaced a....

Discussion in 'The Garage' started by DPI, Sep 24, 2002.

  1. DPI

    DPI 1/2 ton status

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    flexplate without removing the tranny? My flywheel/flexplate is cracked around the boltholes that are used to mount to the torque converter. Can this be done, or am I dreaming?
     
  2. TWISTEDJACK

    TWISTEDJACK 1/2 ton status GMOTM Winner

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    Yeah, I did it with the help from a friend when I had a
    broken leg! Replace the bottom 2 bell housing bolts with
    some that are 4-5" longer. Un hook the tranny lines, put
    the tranny/transfer case on a floor jack, unbolt the drive shafts and cross member and slide the whole thing back. It will still be a tight fit but there is room to get to the
    crank bolts. I did it with a broken leg! /forums/images/icons/laugh.gif /forums/images/icons/grin.gif Alot easier than pulling the tranny. It just slides like it is on rails.
     
  3. bablazer73

    bablazer73 1/2 ton status

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    I've used the same method TWISTEDJACK has. worked well
     
  4. or2play

    or2play 1/2 ton status

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    I did it also. It wasn't the funnest thing I've done thats for sure. I unbolted the convertor from the flexplate. I also unbolted the tranny/tcase from the engine and frame to move it back enough to get the convertor out. If you got the right equipment its not bad at all. Just don't do what I did, use a little puny jack and a 2x4.
     
  5. DPI

    DPI 1/2 ton status

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    Sounds like we have a FEW experts on the subject! Thanks for the help guys. That is exactly what I wanted to hear.
     
  6. driney

    driney 1/2 ton status Premium Member

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    I didn't pull my transmission, I pulled my engine. That seemed easier than trying to roll a jack around on a dirt floor. After I had it out, it was the perfect time to replace the timing chain and various gaskets and seals. Not much extra stuff to unhook on a 78 Chev. tho. /forums/images/icons/grin.gif
     
  7. ben427

    ben427 1/2 ton status

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    just make sure you unhook the kickdown cable if you have one, it will stretch and wont shift right.
     
  8. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Seems lke they are doing it the hard way. Why move 350lb of drivetrain when you can move the 4,500lb of truck around it easier? It is on wheels after all.
    Set some jack stands under the crossmember and a 2x4 under the tranny pan with a couple jack stands or even a jack. disconnect the drive shafts, tranny lines and shifters. Let the air out of the tires till the crossmember comes down on the jack stands. Take loose the cross member bolts and bell housing bolts and torque converter bolts. air the tires back up till you got about 1/2 inch on the crossmember. Roll the freaking truck forward.
    I told waxer to do it this way and he said it worked like a champ.
     
  9. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    i'll do that this time (the 2nd flexplate replacement is coming up soon) last time we removed the drive train piece by piece. /forums/images/icons/frown.gif
     
  10. Kyle89K5

    Kyle89K5 1/2 ton status

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    Do you have a flywheel tool? If not, let me know and I'll get mine over to you. It makes life MUCH easier to roll the motor over.
     
  11. chulisohombre

    chulisohombre 1/2 ton status

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    you should replace the flexplate with a drag race style.i dont know whay it costs but you wont have to worry about breaking it again.i think they are rated at 1000 ft lbs of torque or something like that.somebody on here said they did this after the 2nd stock one they replaced in a 1year period.now they said its been 3 years and no problems.just cant remember who it was.
     
  12. DPI

    DPI 1/2 ton status

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    Hey thanks Kyle! Yeah I made need that tool when I am ready to replace it.
     
  13. Kyle89K5

    Kyle89K5 1/2 ton status

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    Lemme know. It's a knuckle saver, that is for sure.
     

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