When lifting the rear of a blazer..
 

I'm getting ready to put the lift on the blazer.4" springs up front and I'm going to use 4" blocks in the back..This ain't a blazer that is topless year round,it's actually used in the winter so I'd like it to not sit lower in the back while the top is on.How much do you guys think these old 4wds actually sag with the top on? Keep in mind these are factory springs,not lift springs.Do you guys think 4" blocks with a 1" add-a-leaf with stock springs will make it sit pretty level with the top on it? I'm use to lifting trucks,which don't have the added weight of a top in the back,or a tank full of gas to weigh the truck down either..

Re: When lifting the rear of a blazer..
 

No way to tell, it's all about the spring's you currenlty have on there.

Put the top on, see how it sit's, then do what it takes to cure the issue.

Re: When lifting the rear of a blazer..
 

I put 5 1/2 blocks with the add a leaf on the Jimmy a couple years ago. I didn't notice much, if any difference in ride height with the top on or off.

Re: When lifting the rear of a blazer..
 

I don't notice any difference really top on or top off. But don't do the blocks. I had 2 1/2" blocks and a 1 1/2" add-a-leaf. The blocks ended up bending the spring perches on the axle housing. I ditched them for 4" springs. Save yourself the aggravation and do the springs first. An added benefit is the new springs are usually a higher GVW than the whooped OEM ones.

Re: When lifting the rear of a blazer..
 

I'm with ^^^ on the block thing.

When I do mine it will be all springs. Blocks put too much leverage on the spring packs and aggravate wheel-hop issues. The only advantage is that they are cheaper than springs. And did I read that right, 5-1/2" blocks on one? Holy Crap!

Re: When lifting the rear of a blazer..
 

The blocks are going to be temporary..It's just going to have the blocks for now,and then in the spring when I drive it more frequently again I'm going to put in lift springs...as for the blocks,My '79 has had them for 15 years and have never had any problems with them.