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Oct 19, 2009 | 06:48 PM

z28camaro1996

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T56 question

when im going down the road 75 to 80 i get a vibration from the tranny and when i put it in neutral it keeps doing it if not worse i wounder what it could be?

Oct 19, 2009 | 07:09 PM

Gen414

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Quote:

Originally Posted by z28camaro1996

when im going down the road 75 to 80 i get a vibration from the tranny and when i put it in neutral it keeps doing it if not worse i wounder what it could be?

UJoint or Rear end...you SURE it is tranny?

Oct 19, 2009 | 07:53 PM

z28camaro1996

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well i just rebuilt the rearend and ive had the car for about 5 years and never replace the u joint but ill replace it and see what happends

Oct 23, 2009 | 12:49 AM

z28camaro1996

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i replaced both u joints and it still vibrates. so im guessing its the drive shaft or the tranny.

Oct 23, 2009 | 01:54 AM

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Sounds like the driveshaft is out of balance. Slug tire weight would be my next guess but sounds like your pretty sure its coming from the tranny or driveshaft, so I dunno...Maybe a rear wheel weight?

Oct 23, 2009 | 09:16 PM

z28camaro1996

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i feel it mainly from the gear shifter and right under me

Oct 24, 2009 | 12:00 AM

Ketis

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did this happen before you rebuilt the rear end?

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Oct 24, 2009 | 03:12 AM

the_merv

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I'm leaning toward that wonderful LT1 Stock Steel Drive Shaft..get a LS1 Aluminum one.

Oct 24, 2009 | 02:10 PM

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z28camaro1996

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my drive shaft is aluminum. it was made in 2002 by spicer.thats what the sticker says any ways

Oct 24, 2009 | 02:36 PM

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the_merv

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Wow..that's suprising..check the Pinion Nut.

Could be tires too.

Oct 24, 2009 | 03:58 PM

#12

jutt26

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rotate the rear tires to the front to verify if its the tires (vibration should come through the steering wheel at that point).

Oct 24, 2009 | 05:55 PM

#13

z28camaro1996

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Quote:

Originally Posted by the_merv

Wow..that's suprising..check the Pinion Nut.

Could be tires too.

i changed the ujoints and noticed that it was aluminum. it shock me to cause ive had the car for nearly 5 years now. ill rotated the tires tomorrow cause i have to work tonight ill keep yall posted on what happends

Oct 24, 2009 | 05:57 PM

#14

z28camaro1996

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pinion nut was fine we put locktite on it at the rebuild just last week

Mar 18, 2010 | 11:12 AM

#15

z28camaro1996

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sorry i forgot about this post cause i drove my truck for a while. i rotated and balanced the tires and still vibrating from the middle of the car. i had it on the lift last week to change the seals on the timing chain cover and noticed that the seal in the tail shaft was leaking a lil bit. and today i pushed the car a lil bit i noticed when i hit 75 through 85 or slower its the worst.i geared down to 5th it kinda smoothed out when jumping down on it. and it stayed the same from 85 to 100. then when i put it back in 6th it seem to get a lil more vibration from it.

Mar 18, 2010 | 03:07 PM

#16

z28camaro1996

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when the vibration smoothed out it didnt quit all the way cause i could still feel it

Mar 18, 2010 | 03:39 PM

#17

SSmoked1

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Mine does the same thing but it's an auto. Had new spicer u joints installed and the drive shaft checked for balance. Same problem. Then replaced the transmission mount with a poly unit. Same issue. Replaced the rear end with an LS1 one I had. Same issue. I'm really thinking it is the torque arm mount. Vibrates your *** and shakes your passenger seat when nobody is sitting there? The auto is coming out so I'm not able to replace the torque arm bushing but that is a cheap fix. Let me know if you get and it works or not.

Mar 18, 2010 | 04:44 PM

#18

z28camaro1996

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OK when you switch over and its gone let me know as well.

Mar 20, 2010 | 11:29 PM

#19

z28camaro1996

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the new torque arm bushing took care of it. i took the old one of and it was still the oem two peice one. it was really soft and cracked in the middle.