In all the threads I mentioned the CV going out, I was sure to mention that I have 100k on the CVs before cranking. I have had no problems since! I would say go ahead and do it. Going up ~2' is just what a blazer needs IMO. Makes it the right height for an SUV

 

An update for those maybe wondering, I'm planning on going with the BDS 5 inch lift. I'm in college right now, but funds are running short. I've got a tough major that requires a lot of attention to school and not working. So I'm taking a year off to work at aplace that starts at $60,000 a year, working 84 hour weeks though. So after a year, I should have enough money to pay for my expenses until I graduate. Also gives me plenty of money to customize my blazer. I'm going to get my uncle, who is a mechanic, to help me install the BDS lift. Torsion bar cranking just doesn't appeal to me for some reason. Anybody have any experience with the BDS lift?

 

https://blazerforum.com/m_97543/tm.htm

this guy has the 5in bds on his blazer
i know its a little late but i thought i would give you some info anyway
wish i had the mulahh to get one, instead im getting the 2 in bds bl
oh and 31 inch tires will give you approx. 1in of frame lift
stock tires are around 28 inches
if you get 30's they will give you 1 inches of frame lift
the diameter is around 2 inches larger, so the radius would be half that
giving you a total of 1 inch frame, 3 inches total (if installing 2 inch bl)
plus if you crank the t bars 1 inch and put 1 inch shackles on, then your up to 4 inches total lift
30' tires(1in)+2" BL(2in)+tbars and shackles(1in)=4 total inces from stock height
2 inches frame, 2 inches body
hope i helped
-steven