denny, read again i said for a base line tune..i have seen gauges show nothing and it was a vacuum leak. know thats out of the way. three carbs, two dizzy's. if the timing pointer is on then it sounds more like valve timing or to tight of a preload on the lifter only takes one!!! i would lock out the dizzy and set it to 38deg a forget about it and look for the real problem but thats just me..