Spark Plug Advice Needed

Turk,
Go back to sleep. You haven't got a clue, couldn't drive out of sight on a dark night....

My GTO & hundreds of thousands of other Pontiacs idled on the showroom floor with a tiny 197/212 @ 050 cam....& 10.7:1 CR....with 26*. The car makers need to be conservative because they do not know the end use of the car.

The Edel tuning manual states to use plenty of init timing AND/OR use vac adv connected to manifold vacuum to increase the timing at idle. This is BEFORE you start changing rods, jets etc. It is what you do first.

You must be even dumber than I thought if you think with more idle timing, a rich/black plug will be fixed.