4.10 to 4.56 l/s

[Derekdirtrider]

Alright guys so just like my last thread, I've done my research but I like some reassurance to make sure what I think is correct. I have a 2004 ranger Edge v6 3.0. Axle code is 97 (8.8 open, 4.10 gears). I just put 31.6" tires on so I want to put 4.56 gears in to try to get back to normal performance. Is it possible to put the 8.8 l/s 4.56 or do I have to stick with the open. And when I say possible I mean as a direct swap without having to do too much extra work. Thanks for all the help guys.

 

[4x4junkie]

Since you're already doing the gears, adding a limited slip (or most full-carrier lockers) should be nothing extra besides cost of the unit itself.

Guessing 265/75R16 tires? 4.56 should be fine for those

 

[Derekdirtrider]

Awesome! Thanks for all the help, and you nailed it on the tire size. Now I'm off to find me an axle.

 

[4x4junkie]

No prob. Good luck with it.

 

[Derekdirtrider]

This should improve gas mileage right? Is that still the case if you are doing a lot of highway driving @75mph?

 

[4x4junkie]

Should be fine. The 3.0L is a revver, it'll happily spin along at 3000 RPM all day long if needed.
At 75 MPH you'll probably be around 2750-2900 RPM (you didn't say if you have a stick or auto).

The simple act of going 75 MPH itself isn't so conducive toward getting good MPG however...

 

[grzmnky]

im in the same boat as the PO. i have a 3.0 5spd with 4.10s also. im running 32x11.50 tires. i was thinking 4.56 but been leaning towards 4.88 and 33s when the 32s wear out. i was turning about 2800-2900 stock with 235/75 @ 70. I seem to spin both tires when they spin. my truck stays on the pavement and doesnt need a locker. im just looking for a r&p swap. is that something that can be done with stock carrier?

 

[Derekdirtrider]

I have an auto. I'm leaning towards just doing an R&P swap as well. But I'll never go bigger on the tires so I'm gonna do 4.56 of anything. Thanks again guys.

 

[4x4junkie]

I have an auto.

So probably around 2750-2800 RPM (auto has a slightly steeper OD gear than the stickshift).
I'd still grab a low-mileage junkyard L/S diff and just have them throw it in there. Open diffs suck lol.

im in the same boat as the PO. i have a 3.0 5spd with 4.10s also. im running 32x11.50 tires. i was thinking 4.56 but been leaning towards 4.88 and 33s when the 32s wear out. i was turning about 2800-2900 stock with 235/75 @ 70. I seem to spin both tires when they spin. my truck stays on the pavement and doesnt need a locker. im just looking for a r&p swap. is that something that can be done with stock carrier?

Definitely 4.88 if 33s are in your future.