Snapon26

hey fellas,
i just decoded my vin and found out that i have 3.55 gears in my truck. im planning on a 4inch lift with 35x12.50x18, should i consider 3.73 or 4.10? thoughts, concerns, experiences, gas mileage expectations, towing capacity changes? all help is greatly appreciated. normally i would research before posting butbetween work and finals week it is just easier referencing the great minds of the good folks om here! thanks!

zx12-iowa

Expect a major drop in mpg.

With that set up Id go 4.10. Otherwise not worth the time/expense.

MurderFX

True. 4.10 gears will put you close to the performance you had with before the larger tires. And mpg will suffer significantly. My truck gets around 12.3 mpg with same gears. But it will also turn my 35s with ease.

BassAckwards

I guess you're 2wd if you're just asking about rear gears, regardless expect about $1k per axle unless you think you can tackle it yourself.

warriorsfan177

more like 450$ for the rear plus parts. The front one is where you'll need 1k

BassAckwards

The parts are cheap, it's the labor that makes it so expensive. Maybe my friend got ripped off but with labor it cost him $1k to get 5.13s put in his 2wd chevy 2500.

warriorsfan177

yeah I would call that a ripoff lol. Of course im lucky to have a shop over here that will do any solid axle vehicle for 250$. And locker installs for 200$.

Snapon26

ok, update
i was reading my door sticker wrong, my axle code is b6 which means i have limited slip 3.73's so it looks like i have the set i want. at first i was going off of gvrw which is 7200 but apparently i can still town max 9300

Knielsen

post me your vin and ill show you something cool just dont tell anyone

warriorsfan177

gvwr is what the truck itself can carry in total. Say the truck weighs 5500 then you have 1700 of payload. Payload includes passengers and all the extra stuff. Gcwr (combined weight) is the truck, plus cargo, plus trailer. If you want it to perform like the 3.73s you have then get 4.56 gears. Same price and city hurl economy will be the same. Highway will be worse but it's a sacrifice.