Stubborn starting question...

I've narrowed the issue down to the points and a worn cam that may be causing the points to fire less effectively. The hex is rounded badly.

Your advise about switching over to EI makes sense, as I'd have to replace the distributor anyway at this point.

I'm going to be hunting for a reasonable price for both the 273 v-8 and the slant 6 over the holidays, and weather permitting, be bale to tell you that the ladies are both running more smoothly!

Thanks for the advice and good suggestions...