rear axle gear ratio
Getting ready to move up to a 3500. I've shopped the available trucks, and have a good idea of what I want. The two I have narrowed down to are a '14 and a '15 Ram 3500. Identical with the exception o...
Forum Discussion
Most diff ratios offered are about 10% apart...meaning about 10% more or less
power delivered to the drive axles...meaning that going from a
3.73 to 4.1 will have MORE power delivered...or going from a 4.1
to a 3.73 will have LESS power delivered
Sure, the new close ratio trannies does have lower first than before, because
they can with those extra gears...but going too low numerically on the diff can
have higher stresses on the diff gear teeth...'can', not for sure...it depends
Since new gear boxes has more gears and are close ratio...they on the other
end of 1st gear...has double OD's on most...so if me, I'd go lower (higher
numeric) diff ratios
power delivered to the drive axles...meaning that going from a
3.73 to 4.1 will have MORE power delivered...or going from a 4.1
to a 3.73 will have LESS power delivered
Sure, the new close ratio trannies does have lower first than before, because
they can with those extra gears...but going too low numerically on the diff can
have higher stresses on the diff gear teeth...'can', not for sure...it depends
Since new gear boxes has more gears and are close ratio...they on the other
end of 1st gear...has double OD's on most...so if me, I'd go lower (higher
numeric) diff ratios
