Quote Originally Posted by rich grsc View Post
That is NOT normal or correct. Did you check the timing at startup? That is either a retarded timing or lean fuel condition.
Yes, the timing is now correct. I was actually doing the "brake in" run and setting the timing and such during the run that caused this. I was in bright daylight so I did not immediately see the headers glowing cherry red, but as soon as I did, I dropped it back down to idle and all cooled down. I guess the issue was that running at that 2000 RPM was just not giving it the advance it needed. (vacuum advance was disconnected and the mechanical (weights) advance needs to be at/above 2500 to advance as needed. All is good now with the vacuum hooked up.