340 has no balls

I can see the gas being part of the problem... I know when I had my 66 Chevelle SS 396/325hp it would run like total crap with the winter blend gas. That was with the stock 10 1/4 to 1 compression. I went to a full MSD ignition and it cleaned it up for the most part.

Don't we have a member close to him that could go over and stick a timing light on that car. lol