Re: [Chevelle-List] Bad news came tonight...

[Don]

Also pistons slapping against the cylinder walls. Don Here is a list of things that knock Fuel Pumps Oil Pumps Distributors Flywheels will knock if cracked Rods Mains Valves slapping the pistons will knock and thusly bend the valves Worn lobes on a camshaft Heat Risers If it is not getting progressivley louder, you can rule out rods & mains, you have an electric fuel pump, so that is out the door.  If it is missing and running like crap, my guess would be a worn cam lobe.  Could also be a carbon knock.  The best way to check that is to pull the heads.  If it is an older rebuild or not rebuilt at all, this is a good possibility. Tom