Picking the right gears for 1/4-mile

Between 4.10 & 4.56 depending on the tire dia. and how much engine you really have. Only track time will tell. I'd probably do the 4.10's w/the 28's and if it wasn't enough, look into a 26" drag tire for bite and some more rpm.

4.56 is too low if he runs out of motor at 5500 imo.