Using flat tappet. THe cam is a 351, and I already switched the wires to a 302 order just to make sure that wasn't it. After doing that, I replaced the plugs just to be sure it wasn't something like that. I'm still using a stock ignition for now - yeah, I know...young racer on a tight budget :cry:
It did start doing it while in park and revving the motor.
It's only flaming out the pass. side of the front of the carb. I pulled the cover off that side, and everything seems to be working fine.