"In my town 87 to 89 octane is 10 cents per gallon, that's $2.20 per tank."
First time I read that line I immediately looked at where the poster is located. Last time I saw local gasoline prices anywhere close to that was in Iraq almost 20 years ago. I had to reread that post a couple of...
Our 80 series are bricks on wheels, a lot of wind resistance, so IMHO there's not a lot we can do to increase MPG.
IME the obvious things that may make a small improvement (but not much) would be correct timing (or advanced a few degrees), fresh spark plugs/air filter/distributor cap/rotor, and...