06Fargo wrote:
Yes - market influences - dually diesel pickups have to jump through puddles on the construction site while hauling a backhoe...:)
A lot of "power" can be delivered through small components turning at high rpm (dragster). Slower rpm = increase size (ship's propeller shaft). Increasing your rear ratio (bigger number) will decrease strain on components ahead of the axle.
The old time rule of thumb is to gear a truck so at normal cruising speed in the normal cruising gear for the road speed the engine rpm is mid way between peak torque and peak hp (or governed speed). If you modify your engine with supercharging or turbocharging this usually moves the torque number up at lower rpm so the engine will "pull" taller gears.
All other factors the same the lower geared truck will outrun the higher geared truck uphill, against the wind, or in rolling land every time.
Possibly manufacturers can only "void" warranty if the warranty agreement states the modification you are planning will void the warranty. Changing your gearing should not impact a warranty claim for a malfunctioning passenger window ...
Dead on! Thanks for the input. :)
