blue 4.8 has 4.56s and about a 30 inch tire. im not sure what it turns at 70 but it turns around 3k at 85 iirc.

 

i think its the perfect gear for me. i could have gone 4.30s or so for the track but when u put 20k mi yr on the truck you gotta think dd still lol. i spin about 2k @65 and 3k@80. this is on a 31.5 in tire with heavy *** 22s