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Thread: too much thrust

  1. #1

    too much thrust

    Hey guy's, pulled out a mates 383 to fix a rear oil pan leak, took the pan off and sore more than i bargained for, the rear main bearing thrust is just about gone and has worn a groove in rear side of the thrust flange. Can anyone shed some ideas as to where to trace the cause, i was thinking back around flexplate/convertor clearance?

  2. #2
    Senior Member MASTER BUILDER
    Join Date
    Dec 2003
    Posts
    185

    Re: too much thrust

    Quote Originally Posted by qiksix
    Hey guy's, pulled out a mates 383 to fix a rear oil pan leak, took the pan off and sore more than i bargained for, the rear main bearing thrust is just about gone and has worn a groove in rear side of the thrust flange. Can anyone shed some ideas as to where to trace the cause, i was thinking back around flexplate/convertor clearance?


    Do you know what it was when the motor was fresh???? I have seen a bad converter take a thrust out fairly quick!!!

  3. #3
    from memory when we had it on the dyno the guy said the converter was slipping a little, so maybe. endfloat was at .003 now i have about 3mm.

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Sep 2007
    Posts
    4,143
    What kind of trans? My first car I had I put a driveshaft in it that was too long ops: it had a th 400 and it busted the center support in the case and pushed everything fwd into the back of the crank. I only had that driveshaft in there long enough to drive it out of the garage a time or two til I got the right one..trans started to slip a little and when I went to remove it I found the sloppy thrust in the crank.

    Also if the converter has balooned it will push fwd on it.

    cheap converter + lots of power braking can do that...so I'm told.

  5. #5
    trans is a glide, ex show car changed engine and converter and went racing 11.03 @ 121 on the 1/4. converter's at the shop now getting checked, didn't looked like it has balooned.


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