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Old 05-04-2005, 11:21 PM   #1
Katty
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Piston Slap in the C6???

Hmmm, just heard about thie at the local dealer...said there were more than a few issues with this LS2 as well.
Anyone have it?????
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Old 05-04-2005, 11:41 PM   #2
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GM is known for piston slap in its engines, the LS2 dosen't surprise me. I've heard nicknames like "GM engines - like a knock" it's so well known.
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Old 05-04-2005, 11:46 PM   #3
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LIKE A KNOCK...THAT'S PRETTY BAD

I've been warned by my dealer not to purchase one of these cars stating GM is in no way going to cover any real engine block problems and that GM has informed them (dealership) that they are not in a position to even want to step up at this or any near future financial position.
Dealer pretty much told me to cross my fingers.
Sounds like a $50k plus mistake maybe.
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Old 05-05-2005, 12:45 AM   #4
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Are you saying that a Chevy dealer said to not buy a Corvette?
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Old 05-05-2005, 07:08 AM   #5
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Katty, we have not heard of any piston slap issues.

No offense, but unless your dealer can back up these claims, I wouldn't give it much weight.

We've heard nothing like this... and we would have I'm sure.
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Old 05-05-2005, 08:47 AM   #6
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C6 warranty

I checked my owners manual for my C6 and according to the warranty "bumper to bumper coverage for the first 3 years or 36000 miles. It cover any defect related to workmanship and materials occuring during the warranty period. Because it is in writing, if aproblem arises by law GM has to correct it.
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Old 05-05-2005, 08:58 AM   #7
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I have a hard time believing what the "dealer" said. First, it was probably a salesman. Second, they probably thought it was the Cobalt you were talking about. If you for one second believe GM or Chevrolet wouldn't back the warranty on there flagship performance car then you really need to buy an import.
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Old 05-05-2005, 09:10 AM   #8
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well, it's a mass produced engine after all....

The proper way to break in a LS2 , IMO, is to do your best to break it during the first 15,000 to 20,000 miles. If it doesn't break you probably have a good engine . But babying the engine during the warranty period is asking for trouble. These engines are imported from a foreign country to save money.
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Old 05-05-2005, 11:17 AM   #9
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Quote:
Originally posted by boytoy
These engines are imported from a foreign country to save money.
yeah since canada has alot lower paying workforce...
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Old 05-05-2005, 07:12 PM   #10
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I have a friend with a 2003 Silverado Vortec 5300 5.3L V-8.

It knocks (he says the dealer says it's piston slap) for the first 30-45 seconds on a cold start. That's all. Been doin' it since it was new. 167,000 miles on the clock now (yeah, he's a contractor and drives the living hell out of every truck he's ever owned), and it doesn't burn a drop of oil between chages every 3,000 miles.

Don't worry about it...it's all OK.
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Out of Corvette ownership...it was rear-ended in December 2006, and is now gone.
Old 05-05-2005, 10:00 PM   #11
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I know nothing about that engine, but that sounds like a common issue with some forged pistons. Anyone know if the 5.3 Vortec has forged pistons?
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Old 05-07-2005, 12:35 PM   #12
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Piston slap...heres an interesting subject all by itslef but you throw in dealers stating that GM is in no way going to cover a block problem and due to financial issue wont in the future either, and the nearly blasphemous protestation that LS2's are "imported" and somehow second quality....I mean .....sometimes things just go too far.

Buy a Chevy, buy a Cobalt, buy a Silverado, buy 3 Corvettes, come on...GM as a rule not standing behind their product??? I would question the intelligence and allegiance of the persons whom stated that bullshit, just to lightly touch on the financial issues...GM is still the number one auto maker in the WORLD. give 'em a break.

Secondly...piston slap has been around for years, never went away and hasnt just come back...there is no quality or durability issues with the Gen3/4 V8 engine architecture, I have never replaced even a single 97 or newer V8 due to failure. Engines make noise, there are explosions going on in a sealed space, there are 130 metal parts whipping about at anywhere upwards of 6000 times a minute.....its gonna make noise...come on people doesnt anyone remember solid lifters???

Manufactured in Foreign countries.....while I do live in the US and Canda technically is "foreign" I dont really consider this to be an issue worth noting.
the LS1, LS2, LS4,LS6,LS7, 3.6L vvt LY7, 2.8L LP1, are all produced in the far off and technically bankrupt country of CANADA!!!......the Ecotec, 3.1 V6, 3.4 V6 are made in NY state, all4 variants of the 3.8L V6 and 3 versions of the 4.6L Northstar are produce in jolly ole Michigan, Every single truck engine GM uses is produced in Ohio, Michigan, NY, or St Catherine Ontario with the exception of the minivan engines from Mexico and the Equinox drivetrain from China/Japan.

Last edited by MAVEN; 05-07-2005 at 04:31 PM.
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Old 05-07-2005, 02:10 PM   #13
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I agree with you MAVEN. I have had GM cars all my life and all made some kind of noise. I've heard noise in Ford , Mopar etc. engines. In fact my wife use to own a Toyoto Corola with a 4 cyl. and it made lots of noise. ( she now drives a 04 trailblazer and she loves it. The engine in it makes noise As you say, that is just a fact of life with a mechanical componet like a engine.
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Old 05-11-2005, 06:47 PM   #14
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I have been driving chevy engines all my life and the only fault I have found with them is that a stock 78 350 with 80000 miles on it will not take 8 lbs. of boost. ...

Well said Maven...
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Old 05-11-2005, 07:37 PM   #15
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Quote:
Originally posted by Dan Dlabay
I agree with you MAVEN. I have had GM cars all my life and all made some kind of noise. I've heard noise in Ford , Mopar etc. engines. In fact my wife use to own a Toyoto Corola with a 4 cyl. and it made lots of noise. ( she now drives a 04 trailblazer and she loves it. The engine in it makes noise As you say, that is just a fact of life with a mechanical componet like a engine.
I agree with everything that MAVEN has said in his post, but I hope that his information is not reason to believe that, because all GM engines are noisy, all the worlds car engines are also noisy. It isn't so, I have owned cars that had such quiet running engines that I sometimes wondered if it had quit running. In fairness, I also have to say that those cars also cost more than our beloved Corvette's.

I am driving a new C6 LS2, my 5th Corvette since 1994, and I feel very fortunate to own this car. Do I wish that the engine noise, or "piston slap" was not there, sure I do, but does it bother me, or worry me in the least, no, not at all. This engine sound comes with the GM territory, forget it, and enjoy this fantastic car.
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