Avs2 650 tuning on a 340

fez440 said
Rear gear is 3:55. If I bump up the initial timing anymore the starter doesnt seem to like it.

That is in Alignment for most on the timing! You have that part nailed!

You seem to be chasing a CFM issue. Any chance you have a friend nearby with an 800AVS2?

I assume the total timing no vacuum advance and blocked is 35 degrees at preferably 2k RPM.