March 2011 Your Jeep
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March 2011 Your Jeep
Sand Crawler, FSJ Fooling and MoreTow Rig Tech
I have a Ford Super Duty F-250 that came with 3.73 gears about 31-inch tires (265/75R16). I put 33s on it, and of course, it cut the power. I am now putting 35s on it and since I tow my Jeep and carry a cabover camper, I know it will really cut the horses. I know that I need to either put 4.10 or 4.30 gears in it to keep it in the same RPM range in which the diesel was designed to operate. I also know that somewhere out there is a formula to determine the change in RPM with the change in tire size. Do you know where I can find that? Am I on the right track with the 4.10 or 4.30 solution?
Ron Dow
Via email
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Sand Crawler, FSJ Fooling and MoreTow Rig Tech
I have a Ford Super Duty F-250 that came with 3.73 gears about 31-inch tires (265/75R16). I put 33s on it, and of course, it cut the power. I am now putting 35s on it and since I tow my Jeep and carry a cabover camper, I know it will really cut the horses. I know that I need to either put 4.10 or 4.30 gears in it to keep it in the same RPM range in which the diesel was designed to operate. I also know that somewhere out there is a formula to determine the change in RPM with the change in tire size. Do you know where I can find that? Am I on the right track with the 4.10 or 4.30 solution?
Ron Dow
Via email
March 2011 Your Jeep | Digg It | Add to del.icio.us
More...