[bt.rang00]

2003 Durango 4.7 4x4 SLT
3.55s
9.25 rear
265/75 tires

Debating whether to upgrade rear end to 3.55 lsd (or 4.56?). Not sure if I want to go any bigger on tires, all I know is I would like some extra low end get-up for both towing a deck boat and just better acceleration/fun factor.

Jump to 4.10s worth the $$?
Any point to 4.56 with 265s, and would it be too much?

Good performance gain?


Sent from my SM-G935F using Tapatalk

 

[Kevin from Calgary]

I can't answer your question for you, but on the small chance you didn't know this, when you change the rear gears, you have to change the front ones to match.

 

[radioactive]

And be aware that your gas mileage will dramatically suffer.

 

[9t9-5.2]

find an online gearing calculator, enter all of the pertinent information and see where you land RPM wise at any given speed.

 

[dave2003]

find an online gearing calculator, enter all of the pertinent information and see where you land RPM wise at any given speed.

Here ya go...

Gear Ratio Calculator