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General Transmission ?s

This is a discussion on General Transmission ?s within the Drivetrain forums, part of the LSx Technical Help Section category; I am having a slight issue, I had my transmission rebuilt in August of last year, and I have noticed ...

  1. #1
    Army of 1 wooddaniel's Avatar
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    General Transmission ?s

    I am having a slight issue, I had my transmission rebuilt in August of last year, and I have noticed that when I hit around 3000 RPMs on the highway, I get a vibration that feels like its coming from the transmission... could it be the tranny mount(ive had it replaced with a polygraphite one about a year ago) or the driveshaft?

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    Ebaaaaaaaaa Speedy_Gonzales's Avatar
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    pm Performabuilt with your tranny question.........he is very helpful

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    Army of 1 wooddaniel's Avatar
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    Thanks. Will do

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    Veteran 0rion's Avatar
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    I'll move this to the drivetrain section so it'll get more views and responses.

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    Army of 1 wooddaniel's Avatar
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    Thumbs up

    Thanks, I guess in retrospect that would have been a better place to post it

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    Just me Y2KPewterSS's Avatar
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    Could be your driveshaft out of balance.
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    Veteran 0rion's Avatar
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    did this just start or has it been there since the poly mount? Poly mounts will transfer a lot more vibration into the car. It could be a whole list of things. Mount, driveshaft, u-joints, rear, and several other things.

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    Army of 1 wooddaniel's Avatar
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    It started recently, about a month ago It feels like when I broke the mount on my old car... Under hard acceleration i can feel the tranny pushing against the floorboard. It's not serious I dont think, have had the same problem with the three other F bodies I have owned in the past in varying degrees
    Last edited by wooddaniel; 02-25-2008 at 04:21 PM.

  9. #9
    Army of 1 wooddaniel's Avatar
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    Well it turns out it was my tranny going out... lost third gear in traffic today... time for another rebuild

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