Could this noise be from the throw out bearing? At idle, the friction disc is pinned against the flywheel by the pressure plate and is not likely to cause chatter. I know with centerforce, the 454 uses the same friction disk, if that's any help. How about going to website for centerforce clutch and look carefully at how the throwout bearing installs on the fork. I'm talking about the clips. Mine were broke and had to buy a new fork.Man, that trans is sure a bear to handle!
[centerforce.com]
(centerforce.com)<P ID="edit"><FONT class="small"><EM>Edited by Heavychevy on 12/14/01 07:33 PM.</EM></FONT></P><P ID="edit"><FONT class="small">Edited by Heavychevy on 12/14/01 07:38 PM.</FONT></P>