What gears do I need?
Looking at a Ram 2500 to pull a 7K travel trailer. It will be a gasser with the 6.4 hemi. Should I get the 4.10 rear end or will the 3.73 do what I need?
Forum Discussion
parker.rowe wrote:RCMAN46 wrote:
The 4.10 gearing will not give you more horsepower.
Gearing will not change the horsepower of a vehicle period.
Only modifications to the engine can increase horsepower.
Not sure why this keeps getting repeated.
We know gear ratios don't change what the engine puts out.
They multiply (or reduce in the case of overdrive gears) when get's sent to the tires to drive the truck forward.
If they didn't matter, all vehicles would have 1 speed transmissions and 1:1 rear end ratios.
Statements such as this is why what I stated keeps getting repeated.
"Now back to the above HP formula, there is now a change. The torque remains the same, but RPMs is now larger and multiplies torque. The constant stays the same (divisor is 5252). Nothing else changes, except for the increased (fractional) RPM...therefore, there is more HP.."
