I am looking for some insight here. So my car is 67 326 w/ 70K original miles. It ran awesome, purred with the exception of an exhaust leak. The car had sat for awhile while I was having the paint/body work done but I drove a few hundred miles afterwords and it was fine except for a oil pan gasket leak.

After a shop did the pan gasket leak, they call me, tell me the pan gasket is done and say they "discovered" a rod knock. WHAT? How could that be? I asked. The explanation was "well there was lots of sludge and build up in the pan and the oil pump, so maybe that was keeping it quite."

This make no sense to me, but maybe I am missing something? Of course they offered to do the rebuild for $6K which made me even more suspicous. The knock appears to be coming from the lower passenger side of the motor. Any ideas? I havent had the chance, but I am going to check they flywheel bolts maybe it's not a rod knock at all? Problem is it only seems to be present when the car is warmed up? Opinions?