Difference in Gearing
Hello! I recently sold my truck to move to a crew cab. I have come across two F-150's that are very similar save the rear end gear ratio. One has the 3.55 and the other the 3.73. The difference in ...
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'Most' diff gear set ratios step in around 10% increments
Meaning that going up (higher numerically) will increase the torque multiplication
by about 10%. Or going down (lower numerically) will decrease the torque
multiplication by about 10%...and so on
But that is out of context...need to have the transmission ratios for all the
gears and decide where you want the final gear ratio to the drive axles to be
Another dependency is the tire rev's per mile. Find the OEM tire rev's per mile
and that is your starting point
Meaning that going up (higher numerically) will increase the torque multiplication
by about 10%. Or going down (lower numerically) will decrease the torque
multiplication by about 10%...and so on
But that is out of context...need to have the transmission ratios for all the
gears and decide where you want the final gear ratio to the drive axles to be
Another dependency is the tire rev's per mile. Find the OEM tire rev's per mile
and that is your starting point
