I am running the autolite 3924 plugs and idle is 1100 were it runs smooth with no missing. All 4 carb needles on the Holley 670 are set at 3/4 turn out. No run on and starts easy. So far so good with the Iconic 427. Took awhile to get it all worked out.
Do have an
oil leak at the front of the pan where the motor builder put gobs of black silicon where the
oil pan curves around the crank. Guess that will be a winter project next time I get it on a lift.