Tuning with jets, Power valves and an O2 guage

It sounds like it is in the timing curve. You do not mention curving any of the distributors you tried. Most distributors will have too much total with enough initial to run well. If you have not limited any of the distributors total advance curves that you've tried, I think that's where the problem may be.


I looked through my parts shed and found another RB distributor similar to mine. It has the same Mopar Performance guts that are noticeably different than the stock distributors. These MP ones have an adjustable baseplate. It allows from total advance lockout to around 25 degrees of centrifugal advance. The springs feel pretty weak in both. This tells me that they probably advance quickly, maybe too fast. With the timing light flashing, I bumped from a 1000 idle to around 1600-1800 and the advance already jumped several degrees.
Correct me if my logic is flawed, but it seems an overly fast advance would result in part throttle knock. If I am running at 2500 rpm (part throttle, NO knocking) with the full advance already all in, why would it it knock once I floor it?