Ok red58 I checked out your site and the great info there. I measured my 8r17.5 stock tires they came out to be 31 inches timed that by .12 which gave me a rear end gear ratio of 3.73. Not a 5.13 I thought for sure I had a 5.13 but at 2500+ rpm I'm probably doing 55 maybe 60 did they make a 1-ton with a 3.73 I though 4.56, 4.88, 5.13 were what was offered on a 1ton 9ft bed single wheel rear truck If I have a 5.13 my rpm would be 3614 if I was running that fast I would now it and it wouldn't last to long I'm kinda confused I'm starting to think just having my wife drive next to me and tell me how fast I'm going like joker suggested
