I've had 2 LS1's that did it,and friends LS1 also does it. This LS2 does it also, but not as bad. My LS6 did not seem to do it though. It's not really a problem, just a different sound than most people are accustomed to hearing.joegoat said:My LS2 is making a "ticking" noise. Sounds to me like lifters, piston slap or exhaust leak. The dealer is telling me this is normal. It's hard to tell exactly where the noise is coming from. Is anyone else experiencing the same? I have heard that GM engines have this problem and that there are many unhappy people out there.