C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old May 11, 2015 | 08:17 PM
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Bill Jones
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Default Need help

I have a 1977 4 speed corvette. When I shift the gears I can see a vibrations in my rear mirror. Once I get into four gear the vibrations goes away. I just had a new clutch put in and the mechanic told me that my transmission looked ok. I had the vibration before the clutch was put in. I know I'm not giving ya'll very much information but just hoping someone may know something. Thanks in advance.
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Old May 11, 2015 | 09:11 PM
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GRipp 73
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Yea, that is a bit thin to go on. You realize this car is almost 40 years old right?

Just to try and get a little more info out of this. Do you feel any vibrations in the steering wheel? Or maybe in the butt of your seat?
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Old May 12, 2015 | 10:47 AM
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No vibrations from steering or underneath seat.
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Old May 12, 2015 | 11:30 AM
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Is this vibration only when you have the clutch pedal fully depressed and do you feel the vibration when the car is standing still with the pedal fully depressed?
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Old May 12, 2015 | 11:37 AM
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Don't overlook the possibility that your mirror may just be loose.
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Old May 12, 2015 | 10:40 PM
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Resolved this problem in a friend's Camaro...
Trans yoke was worn and yoke bushing was shot. In fact, the worn section of the yoke measured .045" less than the unworn portions!
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