like everyone else said for 31x10.5 you will need a 2in body lift, with shackles and and 1.5in t-bar crank. here is a link to my album with that same setup. https://blazerforum.com/forum/members/nvanzee-9245-albums-my-99-blazer-328/

 

this is my 98 jimmy. she has no lift and 31 on stock rims. she rubs at full lock and full flex with almost full lock.

 

I wish my mud was that color haha. damn.

 

i just bought a 95 chevy blazer 4x4 and want to lift it but dont know whats the best lift or which one i should choose . please help