Im currently running 31's, but will be running 33's soon. For the exception of my suspension and exhaust, Im all stock. What is a good gear ration for me to run 33's maybe even 35's eventually. Thanks.

 

If it's an auto 4.56s, manual 4.88s. If you have a 35 rear consider swapping it out. Don't waste any money on it because it's not good for much over a 31 with mild wheeling.

 

Presuming stock was 225/75/15 and 3.55, with 31s mathematically u would need 3.89 gears to have the same mechanical leverage as with stock tires/gears. With 33s mathematically u need 4.14 gears and with 35s u need 4.39 gears.

 

i think you have this backwards....

4.88's auto
4.56 manual for 35's


4.56 auto
4.10 manual for 33's.


manual transmissions have a different gearing set up and are direct power rather than going thru the power robbing torque converter. so a higher axle gear ratio with a manual is the same as an automatic.

 

Yeap

 

I believe there are charts online which cross-reference tire size, gear ratio and stock RPMs at a given speed. The new gear ratio plus the new tire size should be chosen to produce the same or nearly the same engine RPMs as with the stock tires and gears. That way you'll have the same torque curve as before AND most importantly, it will still pass the smog test, assuming you live in an area that requires one.

 

quick question...i take it not many ppl regear D35 axles then....pointless or no?

 

pretty pointless unless you get lucky like the 2 people on here lol or if you use it just for street. any decent wheeling and your axle will most likely snap. some guy had 35s on a d35 and wheeled it hard and it stayed good for him but he is like 1 in 200. no joke

 

Here is one of my Yukon alloy 35 shafts running 33s with a locker. I was dumb enough to waste money on gears, locker and shafts thinking I would be OK. Several shafts, alloy and stock, later I replaced the axle.

 

ouch that hurt the wallet