360 Questions.. pardon my ignorance.

jazak5 said
that stumble might not be ignition /might be the carb

Good point, I may be too focused purely on the ignition side of things.

volaredon said
Might be the timing chain causing that bounce

I’ve worried about that, it’s just odd to me it was holding correctly for a period and the problem is intermittent. I’d like to think a mechanical problem like the chain would be more consistent.. or maybe that’s just what I’m telling myself.

Dana67Dart said
Setting timing at 1000 RPM might have some mechanical advance in play.

I would back it down to 600 to 700 rpm

Ok, good to know. I’ll tinker with that and see.

Bewy said
Is the cam larger than stock? What carb?

Stock to my knowledge cam, carb is the factory 2-barrel. Nothing fancy.