Thought I should report my findings. The loud noise I was hearing was indeed the rockers hitting cover. Solved that. The other sounds I hear is piston slap. I brought it to the local Mopar race guy/guru. He helped build the motor. Just said it was piston slap, the motor Was blueprinted an everything with a little more clearance for more horsepower. He demonstrated his dart race car and showed me his pistons in the block. Said it was normal and no reason to worry and its a very good strong motor. Makes me feel relieved! Sent from my iPhone -- -- Please address private mail -- mail of interest to only one person -- directly to that person. That is, send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! 1962 to 1965 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html. -- You received this message because you are subscribed to the Google Groups "The 1962 to 1965 Mopar Mail List Clubhouse" group. http://groups.google.com/group/1962to1965mopars?hl=en.