will I have to regear

[onecrazyblackredenck]

I am about to buy my lift kit but I am stuck, if I go 6" and run 37's will I need to regear? Will it tear my tranny out.? Will I need to extend my driveshafts? Or will it be just install and go?

[4everlearning]

As long as you dont pull heavy loads much then you can just install and go.

[bigwhite7.3stroker]

Your driveshafts will be fine at 6 inches just a carrier bearing spacer to get the rear drive shaft at the right angle and as far as gears thats pretty much up to you I'd drive it and see what you think but if you did I'd probably say with 37's and a daliy driver 4.11 to 4.30's the 4.56's would be to low

[Raul@Stealth Automotive]

you wont "need" to regear... you will have to correct your speedo.... with stock gears you will be adding more stress on stock components like your trans... your speedo will also be off which your shift points will also be off.... you dont have to regear but i highly recommend it.... i would go 4.30's oh and also you city driving MPG will decrease because you ahve more rotating mass which takes more HP to get you started with stock gears... i would also upgrade your stock brakes to powerslot cryo rotors on LTS pads and SS braided lines....

[CSIPSD]

Been running a 4" with 37's for 140k... no issues. Wifes X has a 6" and 37's and 120k and no issues.

[Rob]

i have a 6'' with 37's also, no issues here.

[Lonno]

Its not about having issues but rather low end power. My 3.73's with 37's was like draggin an anchor of the line. Now it feels better than stock IMO.

[CSIPSD]

Originally Posted by dlonno

Its not about having issues but rather low end power. My 3.73's with 37's was like draggin an anchor of the line. Now it feels better than stock IMO.

Never had an issue pulling with mine, 3.73 and 37's... All over the country, from 8k to 20k... Get better milage too...

[Lonno]

I think the mileage is a toss up. If you drive highway, yeah, 3.73's will get better mileage. But if youre in town a lot, you waste a lot of gas being in basically the wrong gear. I've changed the gears in every truck I've lifted and rolled bigger tires on. But like I said,
IMO

[CSIPSD]

Here is the way I look at it, if you regear and pay someone to do it, its going to cost you about 1200 out the door... Thats ALOT of fuel! But like you said IMHO...