Hello everyone. I have a completely rebuilt 340 stroker. Every part is new in the valve train. J heads have fresh valve job. The engine runs great and has plenty of power and torque. The problem is I have a thumping noise coming from the number 3 and 5 cylinder. I thought it might be the header gasket so I replaced it but that wasn't it. Anyone have any ideas?
340 J heads
- Thread starter americal
- Start date
-
-
