As far as I can tell from other guys with lifted trucks you'll be alright. Most guy's I know who have lifts put 4.56's in when they have 37" tires because it will make their effective gear ratio more like a 4.10. With 35's I'd assume the ratio would go up a little bit but it's still a good combination to have. You'll get good fuel economy and still have some get up and go when you need to

 

if you have 3.73s (i think) and jumps to 4.56's on 35's you will probably have more get up and go then you do now....how big of a lift are you looking to do...37's are great with a 6" on a 2500

 

i was just going to put 2 1/2 inch spacers on the front and put a set of 35x12.5x17 mastercraft c/t tires on.

 

2500's have the option of 4.88s as well. If you don't do a lot of hwy driving, ya might want to consider. But 4.56's sound right on the money.

 

level kit 35's will look good....4.56's will kick some ass for sure

 

The recognized rule is 33" and taller 4:56, smaller 4:10. If you want taller than 35's I would think the 4:88's would be the way to go. Not only are you going to a taller tire but you are also increasing drag with the lift. Good luck..

 

but i dont think theres a big amount of drag on a 2" level kit....i have stocks 3.92's with my 35's and im still quite pleased

 

4.56's but not to sure on the gear ratio pricing for your differential (10.5"?)

Also if you are going to have a shop do it then gotta take in the price of labor for both axles.

 

think yukon is the way to go any the 2500's...i could be wrong but i thought that was the name

 

ya i have the 10.5 rear. a set of gears is about 1000 from summit racing

 

WOW! a grand sounds a little high. ya might want to shop around a little. I was estimating around 650.00 for my truck which included master install kits. But mine is a 1500 as well, so maybe that is the difference.

 

ya i think a 1500 u can expect a grand per axle with install

 

ya. the 1000 was both front 9.25 and rear 10.5 4.56 gears with master install kit. i still drive down the interstate so i dont think i would like the 4.88

 

Depends on the trans also, i have put 4.56's in the newer trucks and that just made the owners like there truck, when you have a trans that is dbl od trans likem the 545 or 68 the you can make other changes and have 4.56 with the factory height.

 

Can 88's even be installed in the front 9.25 axle?

 

I haven't seen 4.88 for the 9.25 aam diff , 4.56's yes

 

4.56's and 37" tires with a 6" lift here and love it.
I went with AAM gears(4.56's) about 5 years ago and they have been flawless

 

Look'n good..

 

Nice.

 

still need to gear my 4x4 myself here shortly my wife wants 37" tires and I told her we would gear it before we did that so its not so sluggish and bogged down nice truck thou

 

4.56 is ideal for 35's for city driving and four-wheeling, unless you do a lot of highway cruising. I turn 2000 rpm at around 70 mph with mine. For lots of highway miles, go 4.10 or stick with 3.92 (you'll turn 2000 rpm at 90 mph with the latter, but it'll suck around town). This is only for the five-speed tranny (545RFE). You won't be able to find 4.88 gears for the 9.25 axle anyway.

 

I think i just got a new product ann. for 4.88 from Nitro gear

 

Got a link?

 

I got email and this was what i had received C9.25-488-NG 9.25" CHY 4.88 R&P

 

Found this:
Ring & Pinions - Nitro Gear & Axle