96LT1TX

I have readjusted the RR's many times since this noise has come about, and have driven maybe 5-10 miles w/ the noise in the motor (hate to drive it at all) and I cannot get this noise to go away. I am definitly thinking this is a collapsed lifter, because of the sticky I see about comp-r lifters. It sounds like a loud clack, but it is not there at idle. You have to rev it to 3000rpms or so to even hear it. It does get louder w/ rpms though... is this a lifter? I just dont want to take off my intake manifold if I don't have to... I guess I will go back and readjust all the rr's again? What would a loose connecting rod pin sound like?

thanks again

96LT1TX

ok, so does anyone remember the noise of a collapsed lifter? or of a connecting rod knocked loose? or any underlying symptoms of each? I felt way down on power when the noise is in (im guessing knock is pulling timing)

Red on Red WS6

Did the noise just all the sudden start or was it after a mod? Could you provide a sound clip of it?

96LT1TX

noise started after a trip to the 1/4 mile. I did run out of gas (yes, the guage is empty at like 1/10th of a tank) halfway down the track and suspect this to be the problem, but it doesnt seem fuel related.... i went down the track, it launched ok, but at high rpms just fell on its face so i idled the rest of the way.