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I didn't see in the posts if you have an auto or manual trans.
There has been several threads where members have reported vibrations when using a CenterForce clutch.
After they swapped the clutch with another manufacturer, their vibration disappeared.
Auto that I just had rebuilt . Bad Torque Converter which fill the transmission and cooler on Radiator with metal Tranny guy says it’s something else out of balance but wasn’t doing it when I brought it in.
someone once said they had the same problem and he brought his car to a oldschool shop and the mechanic loosened the trans and motor mounts and took the car around the block and tightend everything up and the problem went away ,,, It was on here about 6-7 years ago maybe others can chime in
Update I loosened my crossmember bolts remove the dust cover took the clamps that hold the exhaust where it passes thru the frame. I had my Wife go from reverse to forward a few times and didn’t see a lot of movement. I marked all location of bolts mating surfaces. I put a angle finder on transmission yoke U-Joint 00.3 down. This is really agitating me I noticed my transmission cooling lines going to the transmission are all stripped and leaking. I know he didn’t do it😡
Since my posting I have had the auto transmission removed and rebuilt with a new torque converter. Vibration was still present however it seemed to be reduced somewhat. However recently I needed to replace my tyres. I had the Goodyear Eagle GT !!'s on it. Mind you I had them all removed and re balanced some time ago and it made no difference. The new BF Goodrich T/A Radials were fitted. I noticed that the New tyres were noticeably heavier than the Goodyears.
My Vibration has disappeared.
I am enjoying driving it with the Corvette club.
Even when tires are perfectly balanced they can sometimes still cause a vibration.
Rubber vulcanizes or hardens more every day as it ages. And it may not do this consistently all the way round the tire. So you can wind up with a stiff spot at one location around the tire, that does not flex the same as the rest. It will feel like a vibration or a flat spot but you can not measure it or find it. BTDT.
Sometimes a road force balancer can deal with this.
If the tires are older (5-7yrs) and doing this, just replace them, as you did.
Last edited by leigh1322; Dec 7, 2023 at 11:28 AM.
Leigh1322, your explanation makes a lot of sense. I originally had Goodyear Eagle GTll's which were on the car when I bought it in 2011. I recently replaced the set with BF Goodrich T/A Radials. The vibration has not shown itself since. I noted thatbthe Goodrich tyres were heavier than the GTll's. I firmly believe that your explanAtion is the correct answer in this case.
Many Thanks for your time.
