rear gears

Hopped up Turtle · #1 02-28-2010, 09:14 AM

Can you install 456 gears in the 7.5 ranger rear end?

STL · #2 02-28-2010, 09:19 AM

Why would you want that gear ratio? You gonna be running 37"-40" tires?

Yukon website

Quote:

YUKON FORD 7.5- Ring and Pinion (Tech Note: Modified cross shaft required for 4.56 gear, one can modify factory pin by grinding it, or purchase custom shaft part# F7/XSM.)

Hopped up Turtle · #3 02-28-2010, 03:33 PM

35's And I pull a trailer with a lot behind the 3.0.

Fx4wannabe01 · #4 03-01-2010, 02:54 AM

Quote:

Originally Posted by STL

Why would you want that gear ratio? You gonna be running 37"-40" tires?

For those size tires, it'd be more like 4.88 or 5.13 minimum given the OP's avatar...

Quote:

Originally Posted by Hopped up Turtle

35's And I pull a trailer with a lot behind the 3.0.

You really wanna look into 4.88's for sure. Especially with the 3.slow. And for 35's, I REALLLLY suggest finding a donor 8.8" axle or even the 31spline Explorer 8.8 w/ discs, then gear that axle. The strength increase would let it survive better with the heavier rolling mass and strains that the 35's are gonna give. Ranger 28spline 8.8 minimum IMO.

I rock the 4.0 and 35's w/ 4.88's and sometimes I feel it's not geared low enough. But that's the deepest gear you can go on the D35, so I gotta run it.

Hopped up Turtle · #5 03-01-2010, 10:00 AM

Thanks for all the info. I have a mazda navajo/ explorer[94], Im going to see what rear end it has maby for a doner.

Fx4wannabe01 · #6 03-01-2010, 07:40 PM

Quote:

Originally Posted by Hopped up Turtle

Thanks for all the info. I have a mazda navajo/ explorer[94], Im going to see what rear end it has maby for a doner.

It'll be a 31spline 8.8 drum axle.

carfinatic24 · #7 03-01-2010, 07:45 PM

I have a 98 ranger with 33's now and wanting to eventually get 35's. how come you have yours geared so low?

Fx4wannabe01 · #8 03-01-2010, 07:47 PM

Quote:

Originally Posted by carfinatic24

I have a 98 ranger with 33's now and wanting to eventually get 35's. how come you have yours geared so low?

to put me back to stock-like gearing. compensating for the increased tire size and rolling mass. i had 4.10's and 30.5's stock....getting me back to stock equivilent, I'd need a 4.66 gear. since there's no available 4.66 gearing, my choices are 4.56 or 4.88. going to the 4.88 & 34.8's = 4% lower gearing than stock and also equals a lower crawl ratio. this added compensation takes care of some of the weighty issues too....so it's vitually driving like stock now.

carfinatic24 · #9 03-02-2010, 07:37 PM

ok. thanks. thats a nice truck you have

carfinatic24 · #10 03-10-2010, 10:21 PM

FX4wannabe where did you get your lift and how much was it?