I have a 61 SS with a correct 623 single 360 HP 409 and a 62 SS with a dual carb 409/409.(I am not certain if this engine has dual SS head gaskets) Also a 61 348 dual carb but is a lower compression engine. I have always used racing gas in them as they aren't driven just show only but in my area racing gas is becoming more difficult to get. It's almost getting to be less hassle to load up containers and drive down to Tommy Nolen's!! I am currently using ethanol free 91 (mid grade) in my small engines and boat motors with good results.
I don't want to mess up anything in the above carbs but am facing I might have to change to ethanol free. Any comments? LL100 avgas is also available to me currently.
Robert
I don't want to mess up anything in the above carbs but am facing I might have to change to ethanol free. Any comments? LL100 avgas is also available to me currently.
Robert