C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old May 5, 2015 | 07:04 AM
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as most of you will recocgnize, driving your Vette for a while makes you aware of her typical noises and behaviour. things that a mechanic may not even hear or feel.

the noise I am currenly working on after solving the diff issues is a humming sound only when I cruise. when releasing the gas pedal its gone right away.

does anyone ever had the same noise and was able to solve it? or does anyone have the knowledge to do a root-cause and may have a clue?

appreciate your help and comments, as always.

kind regards from a Vette loving country!

Arthur
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Old May 5, 2015 | 08:00 AM
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Manual or automatic? Is the noise coming from the front or rear of the car?
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Old May 5, 2015 | 09:27 AM
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Originally Posted by JimLentz
Manual or automatic? Is the noise coming from the front or rear of the car?
U r right!

77 automatic.
noise is from the rear
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Old May 5, 2015 | 09:35 AM
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Sounds like the gears in your differential. I had a manual transmission like that, but it never gave me any troubles.
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Old May 5, 2015 | 10:08 AM
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Originally Posted by JimLentz
Sounds like the gears in your differential. I had a manual transmission like that, but it never gave me any troubles.
thanks Jim! Ive had the diff overhauled some months ago since it was making a hell of a noise after driving it for 45minutes or so...maybe worth while having it checked...
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Old May 5, 2015 | 10:21 AM
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Originally Posted by ArthurfromHolland
thanks Jim! Ive had the diff overhauled some months ago since it was making a hell of a noise after driving it for 45minutes or so...maybe worth while having it checked...
Does the sound also go away if you give it a bit more gas?
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Old May 5, 2015 | 01:00 PM
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Originally Posted by JimLentz
Does the sound also go away if you give it a bit more gas?
not sure, since if I do the pipes get the upper part...
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