Quadrajet jetting question

[Jaysonb]

Originally Posted by enaberif

A dyno can't tell you if a vehicle is running lean or rich. It can only tell you hp and tq values.

Based off of these values you can see if you have areas that you can improve through various means but the only way to 100% sure tell what is happening is with a wideband o2 setup.

I wonder how my dad, and grandpa set there carbs up back in the old days? The wide band set up is cool, but its not the only way to tune a engine. Believe it or not, back in ancient times guys used to have to pull spark plugs, and determine how there engine was running, just by the color of the plug!! Sounds crazy, I know!!!