Just a comment on this thread....
Is it just me, or does this sound like we're running
out of advance here. I had a corvette once the ended up
with a problem in the advance plate & weight assy, namely
they didn't advance. It ran out of poop quickly above
3000-3500 rpm, sounds kind of simular.
It might be worth checking that your still getting
full advance by 3000 rpm ( something like 45 degrees on
the crankshaft ???), someone out there probably knows
more about what it should be than I do.
guessing...
Harlan.
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