Betsy is running so good i am amazed ,i replaced the manifold gasket and rings, torked it down no leaks did the gas squirt test on all joints. So can anyone tell me where to look to try and get rid of a occasional uptick in RPMS from 475 to 525 on the tach and dwell gauge at idle.You can hear it go up and come back down standing by the truck. I am not unhappy about it but if i can get rid of it that would be all the better.The vac advance on distributor works. I only did a set up valve adjust not HOT just yet. Any ideas would help. thanks again.
