Anyone know the factory gear size in the front and rear of a 81' 4wd p/u? I've ordered a 4" lift and 35" tires, already have 15x10 wheels and wanna make sure I get the right gears to handle it. Any suggestions on a gear size and/or kind?

 

not sure this will help since the title is for different years but maybe it has some useful info.

https://www.yotatech.com/forums/f116...osting-204178/

 

my '81 came with 3.90's. 33's and than 35's sucked with stock gearing. go with 5.29's.

this is a subject that has been covered over and over...