High RPM Rattle?
Thread Starter
Staging Lane
Joined: May 2002
Posts: 72
Likes: 0
From: Hillsborough, Ca
High RPM Rattle? I have a noise that comes and goes. Sometimes when I hit high rpms It sounds like a baseball card stuck in a bicycle wheel. It also sort of sounds like marbles shaking in a can sometimes, alomost like a bolt is loose in the exhaust system. At first I thought that something was something contacting the drive belts or fans, but nothing is close. It does it somethimes when I rev up the motor while stopped as well. I recently had a new LS6 382 stroker installed with Hooker LT's with the ORP. I also did the AIR restrictor mod. It's not detonation because I was logging runs with a scanner at the time. No Knock was recorded. Can anyone help?? Thanks
Re: High RPM Rattle? I have a rattle sound at high RPM's too(5500RPM) with no regesterd detonation with EFILive scanner, My rattling sound comes from the front not the rear. I'm thinking It might either be valve train noise or the air pump valve loose on I'ts metal braket.
