What should I use? Annd are all master install kits 200 bucks? Thats more than the ring and pinion itself.

 

how many miles do you have on your truck? if your truck is like mine with low miles you might not need a master install it....your might be able to reuse some things... I've got 4.88's with my 24's and 37's and they helped my city gas mileage so much but killed my highway mileage. im exactly 13/13

 

If you pay a shop to do it you should not need the kit at all, they should have pleanty of parts lying around

 

They told me I would need a master install kit??

 

56,000 miles on the truck, and Im looking for city mileage improvement. I get 13 now with stock gears and a custom tune

 

im running 37"s and getting 7/10 im about to upgrade to 4.56's i only have 32,000 on my truck so im going to try and go without the install kit. 4 wheelparts is having 10% off on their gears right now i just picked them up for less than 200 for the rear

 

You might wanna go with 4.88's if you have 37's

 

I posted up some info about gear calculations and some links to other calculators....
Have a look.
https://www.f150online.com/forums/tr...alculator.html

 

www.accuautoparts.com

I put some red electrical tape across my 4x4 switch till I got the front end done.

Another solution would be to unplug the wire harness behind the switch till your done.

 

There's a bunch of good info here

 

And don't forget to change the fluid after you break in the gears.

 

Pretty sure IM just gonna let the shop do it, its gonna be about 600 including all parts and labor with a lifetime warranty.

 

And don't forget to smoke them 35's after they are broken in too!

 

Don't worry, I will How long is the break in time usually? I hope to get my tires and rims sold and get these in next week.

 

I don't remember for sure. I think you have to drive it for about 20min to get it warmed up, let it cool, repeat. Then be a little easy on them for 500 mi.

I kinda gave mine hell right after I got them in and drove it around a bit.