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Old Oct 31, 2003 | 12:21 PM
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Default Vibration

My car vibrates between 2000 and 3000 RPM in any gear. It isn't a violent vibration but it is annoying. Where should I start looking?
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Old Oct 31, 2003 | 01:01 PM
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Has it always done it?

Did it start after the converter swap?

Will it vibrate in neutral or only in gear?

Do you have poly mounts for tranny or motor?

Anything changed on your car lately?
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2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
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Old Oct 31, 2003 | 01:03 PM
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Originally Posted by Patrick G
Has it always done it?

Did it start after the converter swap?

Will it vibrate in neutral or only in gear?

Do you have poly mounts for tranny or motor?

Anything changed on your car lately?

I don't know I just got the car 3 weeks ago

Not sure

Yet again not sure( I will get back with you on that)

Yes poly trans mount(I bought it with a broken trans mount and replaced it)

Just the owner
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Old Oct 31, 2003 | 02:15 PM
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Ditch the poly trans mount and use the 1LE mount and your vibration will be LOTS less. Call Thunder Racing.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

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Old Oct 31, 2003 | 02:39 PM
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Originally Posted by Patrick G
Ditch the poly trans mount and use the 1LE mount and your vibration will be LOTS less. Call Thunder Racing.
Do I need to replace it or should I replace it if it is bothering me?
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Old Oct 31, 2003 | 04:48 PM
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The poly mount is fine for performance, but it's been known to rattle some teeth (and nerves). Replace it only if the vibration bothers you.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

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Old Nov 2, 2003 | 08:51 AM
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Thanks for the help and info!
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