C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

No balancing weights on driveshaft

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Old Mar 27, 2004 | 07:01 AM
  #1  
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Default No balancing weights on driveshaft

My driveshaft, (84) has no balancing weights. My Helms indicate the weights are needed for balancing. Must all driveshafts, (84) have them?
Your input is appreicated, I will hold off on installing the driveshaft unitl I here from the pro's.
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Old Mar 27, 2004 | 07:48 AM
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Default Re: No balancing weights on driveshaft (Brimis)

Not sure about all- but my 84 manual tranny driveshat has weights...I don't remember the exact locations (front\back) but I replaced the 4+3 with a ZF6 and had everything out under the car...even the driveshaft from the 96 driveline had them...

They looked to me as if they were welded on...not sure how they could have come off your's??? unless you have a perfectly balanced shaft....do you see any square marks on the shaft that indicate where they may have been?

Does the car shake under driving conditions? how do the U-Joints look?

-Bob
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Old Mar 27, 2004 | 08:04 AM
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Default Re: No balancing weights on driveshaft (byte_me)

Another tip...

I'm not sure about the older models but my 95's driveshaft and rearend yolk are marked. It's mentioned in the service manual. Look for a black mark on the driveshaft and a yellow mark on the yolk. These paint marks indicate the "heavy" side and should be assembled opposite each other. Believe me, it makes a difference...I had mine installed wrong once and felt the vibration.
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Old Mar 27, 2004 | 08:12 AM
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Default Re: No balancing weights on driveshaft (Atok)

My 85 has weights an I had it balanced too, the weights were at the tranny end if I remember correctly
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Old Mar 27, 2004 | 08:28 AM
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Default Re: No balancing weights on driveshaft (Brimis)

It could be that it just didn't need any. Have it checked, balancing shouldn't cost too much.
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Old Mar 27, 2004 | 10:51 AM
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Default Re: No balancing weights on driveshaft (Brimis)

If you are having a driveline shop installing the u joints, ask them to spin it up for you to see if there is a problem. Good luck, and...

RACE ON!!!
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Old Mar 27, 2004 | 10:54 AM
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Default Re: No balancing weights on driveshaft (Brimis)

my '93 shaft does not have any weights either.
I had new U-joints put in and then balanced, it didn't need any material added or removed. Locally, new U-joints & balance was $100
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Old Mar 27, 2004 | 11:33 AM
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Default Re: No balancing weights on driveshaft (y5e06)

Weights are only used to balance-it's quite possible when constructed it was within tolerances and needed no further balancing-just my .02 :rolleyes:
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