I'm posting this here because of the motor in question...

I have a 66 mustang with a carbureted 1991 5.0 motor in it. I purchased the car after it was built. Its currently running with a holly 600, eldelbrock performer intake, and pertronix ignition. I have replaced the plugs and wires, and fuel filter.

I had a shop rebuild the carb, replace the intake, and tune the car when I bought it. Its runs pretty strong when driving. But one thing I've noticed is it idles a little rough...almost...

Timing question / lopey idle