well i am between a set of gears... i hve differant people tellin me differant things.

i am going to be putting my 7 to 9 inchs of lift on my truck... rebuilt transfer case, new trans w/cooler, and a set of 37 or 38 inch tires. i am putting dana 60s (already with 4.10 gears) front and rear under the truck...

i have been told to put at least 5.13 gears because of the tires size. i then talk to my dad and he tells me that that is to low,

as for the engine, i plan on doing a built exhaust, aFe intake (stage 2), hypertech tuner, and MSD coil w/ wires and good plugs....

i dont know what gears would be m best bet being that this truck will be on the road as much as off road, and when its on the road, its not for racing so i am on the highway more then the bckstreets. so i dont know. im stuck in a sence

 

4.88.

 

i would go with 5.13s

60mph in O/D (0.69:1)

4.10 = 1501 RPM
4.88 = 1787 RPM
5.13 = 1878 RPM

I think the extra rpm is ok for the amount of torque you will be getting, dont forget that a 38" tire is going to weigh over 200lbs, thats alot of tire to get rolling from a stop.

Also, 4.10 is the cutoff for carriers size in D60s, if you want to go any lower (numerically higher) you will need to buy a carrier for that style.

 

so 5.13 are good? what do you mean a carrier, like the third member... in the rear, i will also be buying the detroit softlocker for the rear, is that what you mean, for the front i will figure soething out.. like a truetrac, with the 5.13, is that what you mean...

 

Dana 60s dont have a 3rd member, those came in Ford 9" and chrysler 8 3/4" style. the carrier is the center section that holds the bearings, spiders, sides and ring gear. If you are buying a detroit locker, it will replace the whole thing anyway, just make sure you specify you need it for whaterver gears you decide to choose.

 

ok, for the rear, i knda unerstand, i am coming froma learning point here, so if i dont get teh detroit locker, becasue i need to make sure the truck goes in every gear (foward and reverse) first being i cant go backwards right now, i get a set of 5.13 gears, for a dana 60, what else do i need to replace? you said a carrier, what part is that, like i am still kinda not all there with axle just yet...

 

WOW! So even with 5.13's, someone with 38's will still be turning a slightly slower RPM then my truck with 33's and 3.55! Dang!!! And here I want 4.56's and also want to keep my 33's.

 

I have 35's and 4.56, and I can tell you that any bigger then 35 and I would definetly want 4.88. I think 5.13's are a good choice for what you want to run. Don't go any lower (numerically) then 4.88 for sure.

 

+1 on Silver

Do not put a limited slip in with those big meats. You'll need either a cable locker or just a full detroit. Stay away from pneumatic lockers. (the locker is your carrier). Might want to look into 35 spline axles, they'll fit. Or upgrade your 30's to a chrome-moly axle. 38's are HUGE and take alot of upgrades to stock parts if you want to wheel it. Spend the money now instead of on a tow truck later.

 

sample wish list:
Dana 60 detroit full locker 4.10 up 35 spline
Precision gear set 5.13 front and rear Dana 60 full float
Master install kit (shims, seals, and bearings)
Dana 60 front carrier 4.10 up 35 spline outer
Alloy 35 spline rear d-60 chome-moly axles
Dynatrac Free Spin Hub kit w/ 35 spine outers
Couple Cases of Royal purple or Amsoil Gear oil
Bigger brake kit for those meats
Chrome-moly U-joints for shafts and knuckles

This is just a sample, but hopefully It'll get you started pricing. Anybody feel free to add in or correct me.