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I have a similar problem. Yesterday I changed the mechanical curve springs to heavier ones and my initial timing dropped, confirming that I was getting a lot of mechanical advance at my 12-1400 rpm idle. My initial dropped to 20 degrees and with my black bushing I have 38 full advance. Still...

What octane fuel are you running? If you have 93 I would be surprised if you would get any detonation where you are with a fairly big cam like that. Without changing your distributor curve try bumping it up and see what it likes. Sounds like you'll pick up some rpm at idle in which case just...

A motor like that will probably want around 38 degrees total and my guess would be at least 15 initial. It will all depend of course on the specifics of your motor - and what your distributor will allow for the spread. My motor is a bit more "high strung" than that and I run about 24 initial and...

Run high zinc oil even with a roller.... Had a couple bouts of the same situation but in my case the push rods didn't bend, they broke the (aluminum) rocker arm by jamming underneath. Sounds like your push rod came out (too short, not adjusted properly or rubbing on the head), bent under a...

Manley H beams in mine.