Timing ??

388dart said
12-14* initial, 34* total all in by 2500-2800rpm. change to 3.91s before it blows up - unless you have ±34" dia. tires.

4.56 with a 28" tire is a very good combination. A 318 will handle a 26" tire. 5.57 with a 30" tire is good to 120 mph.