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#1
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Yeah, it was a hit/miss thing it seemed like...you'd see 5 Camaros that had it, then the next 5 might not...from what I saw, Chevrolet ignored the problem until the Corvette owners started griping, then they drug their feet researching it long enough that the Camaro production stopped and they eventually moved onto the LS2...
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#2
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I have been doing a search on gm dealerworld looking for info on this topic. Not arguring with anyone just passing on what I found. The only engine with piston slap info was the 4.8L. All others was wrist pin noise, corrected with floating pins in the 2005 year model.
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20 foot 75 hp good time at the lake |
#3
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My 06 has the 4.8. It's a slug.... I can hear all 8 high fiving each other on start up but it quiets down. Runs great but again.... It's a slug....
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#4
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Yeah and the 95 is like 200 hp loved that truck-never any problem except wiper motor went out like 3 times
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#5
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My LS1 SS has the piston slap as well as my 6.0 Vortec in the Yukon on start-up. Just have to live with the noise I guess.
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It is impossible to certify a COPO or Z/28 as authentic without verifying that it is not a rebody... |
#6
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Here are some TSB's on the piston slap in the LS engines...when I had my SS, I seem to remember a TSB specifically outlining the problem as excessive clearance on like the rear most cylinders of each bank maybe, but I can't find seem to find it...anyway:
#01-06-01-022 #01-06-01-028 #01-06-01-028A |
#7
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It is my understanding that, a few years ago, GM with to short skirt pistons across the board to cut down friction. A friend's Impala sounded like a diesel on startup but never gave any trouble. Kind of hard to sell a noisy engine like that though. Forged pistons in loose bores used to do similar things until they warmed up.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. ![]() |
#8
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Thats all old stuff what I looked up is for the 03 model year!
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20 foot 75 hp good time at the lake |
#9
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[ QUOTE ]
Thats all old stuff what I looked up is for the 03 model year! [/ QUOTE ] It is? You should have let my 04 Yukon know that! ![]()
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It is impossible to certify a COPO or Z/28 as authentic without verifying that it is not a rebody... |
#10
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Its caused by rather short pistons. When they go over center at top and bottom they give a little tick. Goes away as soon as it warms slightly. It is a minor annoyance and no problem. You want the performance from lighter pistons and long rods, you'll have to live with it! Frank
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