Quote:

I swear the book says +/- 2 degrees of timing.

That means that you can vary the timing in a 4 deg window (2 deg on either side of the specified number which is in the book somewhare.) & fall within 74 model year emission standards which were strict in those years. I'd start by getting the idle speed down low ~600 RPM or so with the initial set at 15 with the vac adv on ported

live every 24 hour block of time like it's your last day on earth