Need help NON mopar 1967 Pontiac Lemans 326

Get a plug without a black shell.

That thing is pig rich at idle. If you listen carefully it may oink when you blip the throttle.












Ok....that was just uncalled for. I apologize. Seriously you need a different plug w/o the black shell and work on the tune up. If it's that fat all the way up you are giving up a fair bit of power and a huge bunch of drivability.