Engine vibration?
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Joined: Jul 2017
Posts: 77
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Engine vibration?
Is engine vibration normal in the Lt1? A while ago I posted about a vibration in my clutch pedal after the vehicle is warmed up, now I think it's actually coming from the engine and not the transmission, only happens after the engine is completely warmed up. I had my fiance rev the engine while I had the hood popped and my hand on the engine. Definitely a good vibration in the engine, she only revved it to another 3500. Just not sure if these are supposed to be smooth or not. I don't recall my GT350 with the flat plane crank having this vibration, and I really hate going to dealer ships.
Race Director
Joined: Mar 2001
Posts: 19,948
Likes: 6,750
From: Bonneville Salt Flats
Go to a dealer and try another one or two to compare with. It's hard to be sure what you are experiencing remotely. I don't think my LT1 is the smoothest either, but I don't feel anything in the clutch-pedal which I'd equate with your description. Did you buy your C7 new or used???
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
Mine vibrates slightly while idling whether at start up or after it's warmed up but there is no real RPM fluctuation. I don't feel any roughness when applying power. This I take as being normal given it's a high performance engine.
Do your RPMs fluctuate?
I agree with a previous post who said bring it into the dealer.
Do your RPMs fluctuate?
I agree with a previous post who said bring it into the dealer.
Thread Starter
Advanced
Joined: Jul 2017
Posts: 77
Likes: 9
Go to a dealer and try another one or two to compare with. It's hard to be sure what you are experiencing remotely. I don't think my LT1 is the smoothest either, but I don't feel anything in the clutch-pedal which I'd equate with your description. Did you buy your C7 new or used???
Thread Starter
Advanced
Joined: Jul 2017
Posts: 77
Likes: 9
Mine vibrates slightly while idling whether at start up or after it's warmed up but there is no real RPM fluctuation. I don't feel any roughness when applying power. This I take as being normal given it's a high performance engine.
Do your RPMs fluctuate?
I agree with a previous post who said bring it into the dealer.
Do your RPMs fluctuate?
I agree with a previous post who said bring it into the dealer.
Le Mans Master
Joined: Aug 2015
Posts: 8,243
Likes: 4,617
From: Southwest Florida
Thread Starter
Advanced
Joined: Jul 2017
Posts: 77
Likes: 9
Went to the dealer, shop foreman said he thinks that vibration is normal since it's a large pushrod engine, and since out of all the 8 other vettes on the lot none were manual he had nothing to compare it to to see if it's normal or not.
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