Thanks, Jerry
Thanks, Jon
I knew your replies would be polite, but not what I hoped to hear (and, what I expected to hear).
I have had a 302 GMC AA-1 on my 270ci 1960 261 for 3-4 years. It was drilled for the vacuum-advance port.
I am a rube regarding my techniques for carburetor adjustment. I "lean out" the adjustable jets to get clean plugs after normal driving. Mixture is adjusted to obtain maximum vacuum at idle.
If I want more power at high speeds. I (temporarily) go for a richer mixture for high-speed power. That mixture for that high-speed-oomph is set "empirically" : checking plugs after high-speed/acceleration runs (looking for more "color" on the plugs - never enough to foul the plugs). The power/acceleration impresses my friends (and, the gas mileage suffers).
My rather ignorant methods have resulted in reliable starting and enjoyable driving. But, I think/guess that I have been dumb-lucky.
Thank you both, for your thoughtful answers (and, for being gentle on me).
