Im installing at 8 inch lift and 35s or 38s soon on my 01 5.4l 4x4, and im going to need gears for obvious reasons (fuel and power) and im not sure which brands are decent. Right now im looking at these http://www.americantrucks.com/gears-488-88-rear.html - because they're cheap, but im wondering about quality. Also, what rpms can I expect on 35s with 4.88 gears at around 70 mph (in overdrive)?
should I go 4.56?

Thanks all
-450f

 

http://4lo.com/calc/gearratio.htm

2300.

 

Motives aren't bad, but they whine. Just make sure you follow the break-in process to some degree. Everyone recommends 500 easy miles, but I gave up at around 250. The guy who changed out the gear oil said it was still perfect.

 

i read and had other members tell me about yukon so i went with them, im waiting to install them when i get some time over christmas break along with the lift, wheels, and tires

wayne at diffsonly.com was great to deal with and a good price

 

X2 for diffsonly.com great guy to deal with and excellent prices!

i went with yukon gears, i heard they were the best.

 

HOLY &$#%!! I hope the Youkons are good, and hope they're made out of titanium!! $368 vs $175 for the exact same thing in a Motive! For the rear axle, maybe so. Bu for my front axle that gets put in 4WD for the snow a couple months out of the year??? I'm thinking not!

 

I got my yukon 4.11 gears and install kit for 350 from randys ring and pinion

 

i paid 208 for my rear yukon 4.88's and 230 for the fronts from wayne. you have to call him to get the better price.

 

8.8 or 9.75? And was those prices including install kit?

 

it was for the 9.75 and the yukon master overhaul kit was 234.

 

So then $350 for yukon gears and install kit is a good price

 

thats a good price, but i paid less than that through wayne.

apparently my invoice doesnt reflect what i paid.

 

$310 for my 4.10 Yukons and Yukon Master rebuild. Wayne at diffsonly.com.

 

Okay, good to hear. Whats a little whine to save a few hundred bucks? haha

Also, I think Im going to go with 4.56's, 2300 is kind of high considering I drive 90 freeway miles every weekend. I wanted 4.88's In case I move to 38" tires sometime but, 4.56's should provide decent torque on 35's.
Anyone running 35's and 4.56's, whats your fuel economy like? (city and freeway)

 

310 for all of it or ea.? If that was your total I'll be giving wayne a call tomorow