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?
