4.56

I am building a GTX with same 30 inch tall tires. I am going with 4.56 with a Dana 60 but will install a Gear Vendor OD.

My race car used to be driven on the street with 30 inch tires and 4.56 gears. Car went high 10's with a 440 and 906 heads before I rebuilt the car to go faster.

For my stuff no way would I consider 4.88 with this type of combo. Nothing to gain in my opinion..........

67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......