If you think you are going to get 37's, I would definately go with 4.88 gears, I am here in a week or 2.

 

See thats the thing, I think Im going to go with 35s and if I don't like them when they wear out, I'll go with the 37s. Im sure I'll be fine with 4.56s and 37s, SALFX4 is running this set-up and has no regrets. I think or he hasn't said anything, yet.

 

I have a reg cab xlt with 3.55 LS. I dont have much of an axle howl but could probably get it looked at and possibly fixed. Is it worth it for me to spend the difference in just the price to put the 3.73 LS on while they have it taken apart? If not I might just buy the 4.10's and get them put on somewhere else. How much does this normally cost? Thanks

 

You will get better performance on the lower end with 37's & 4.88.

 

never mind

 

Only if you are ultra conservative and want max fuel economy at the expense of any acceleration.

As other stated, 4.56 MINIMUM with 35s. This will get you close to the stock tire 3.73 gearing. I have 4.56s in my truck on only 33.5" tires. The truck tows significantly better than stock, and only sacraficed 1.5 mpg on the highway and nothing around town. On the stock tires w/ 4.56s I got 13.5 in the city and 15 on the highway from 13.5/16.5 stock. With the bigger 305/55 20 Nitto Terra-Grapplers on 20x8.5" centerlines, that went down to 12.5/15. At least the truck can get out of its own way still. I am probably going to drop down to 4.10 at the loss of acceleration just to quiet down the whine I have with aftermarket 4.56s. I may see around 1 mpg back on the highway...wooo hooo. I may have to start a frickin savings account to put the major gas savings in. Just have to wait for Ford Racing to start producing the 4.10 gears.

 

Heavy Duty Payload Package $1,200.00

- 2290 lbs Maximum Payload
- 4.10 Non-Limited Slip Axle Ratio
- 8200 lbs GVWR
- 17" 7-Lug Steel Wheels
- 50-State Emissions System
- LT245/70Rx17D BSW All-Terrain (5) - (General)
- Heavy Duty Shock Absorbers, Frame and 72 Amp Battery
- Upgraded Springs, Radiator, and Auxiliary Transmission Oil Cooler
- 10.25" Gear Set with 4.10 Axle
- Optional Snow Plow Prep (4x4 Only)

Also note the 10.25" Axle, not the 8.8 "or 9.75"

 

I know........read my post more carefully. I can guarantee you I built a LARIAT that provided a 4.10 option....I even double checked it. Like I said, it was a glitch in their website. It was right after the slight redesign of the "build your own" on the website.

 

Relax, I was just pointing out that it has a 10.25" axle. I also wish we could get the 4.10 or 4.56 from the factory.

 

No need to tell me to relax....I'm not upset, just clarifying myself. I HATE text....emotion is impossible to read

 

Ditto, Just clarifying