im going to be doing a 6.5" lift withe 33s and its a 5 speed and its going to be a dd

 

u might wanna be a little more specific are u asking a question?? im assuming u wanna know what gears to run theres tons of threads that cover this it depends on what u wanna do with your heep but if i must im gonna say either 4.56 or 4.88 hope thats what u were lookin for

 

.12 times the tire size is the basic formula

 

I told you 4.56....BILO

 

.12x33=3.96 im running 38s on 4.10s i think those 4.56 are gonna be to tall for those small of tire for a d.d. 2cw

 

everyone is regearing.....i have 32x11.5s and 4:10 i drive it everywhere and it seems perfect 4:56 is alot of gear 88s are way too much for a dd

 

i have 4.56 on my 35" mudders with my 94 cherokee and love them but 4.56 is to much gear for 33's unless you plan on 35's in the future then stick with 4.10's

 

i got told to use 4.10 , 4.56, 4.88 whats the difference between them

 

4.56 with 33 is too much? you guys are talking about the manual 5 speed right?

 

yea the 5 speed i got told those 3 different gear ratio and cant figure out witch one im going to need

 

yea I would go with 4:10 for DD and 33s even if you run 35s someday will work great with the 5 speed 4:56 is better for an auto IMO

 

ok thanks for the help

 

the 5 speed needs less gear than an auto to start with...they have better ratios in the trans you could get away with 3:73s but that would be kinda dumb....forget 4:88s they are not gonna work for ya to steep you'll be looking for another gear in the trans... 4:56 would be max but still kinda steep..i have 4:10s in my chevy with 36s and i really wish i had overdrive i have 4:10s in my XJ and it's running 2200 at 60ish and happy with 32s. more gear will mean higher rpm on the highway and it will make first gear useless on the road

 

Your gearing is to high for running 38s with a straight 6 where I live anyway. It is a lot different when you need power and torque to climb hills, and the 1744 rpms or so at 65 is just not in the power range. I think the 2384 that the OP would be running at 65 with 4.56 would be about perfect. One thing your formula doesn't address is the extra rolling resistance and drag of larger tires and increased height.

I keep reading that you don't need as low of gears ( numerically higher ) if you run a manual, this is not true. The torque converter makes it possible to use taller gears (numerically lower ) than the manual that is why a good crawl ratio for an auto is in the neighborhood of 45-55 to 1 where a crawl ratio of 60-80 to 1 is good for a manual.

 

^downshift?