2x4 lift. what i need to know
 

i am wanting to lift my 2x4 blazer. what do i need to do, and know before doing it.

Know that coil spring spacers are a bad idea, cuz the coil buckets are pretty shallow, so they'll just kick out. The best thing to do is get on eBay motors, punch your make and model into the parts search, and go to the suspension section and find a set of lift spindles for the front. That should get you 3 inches or so (depending upon brand, some are 3.5") without camber issues. Then, for the rear, find a set of 2" lift shackles to level the rear with the front. If you want more lift than 3 inches in the front, look into a set of moog coil springs (5664 that are for g body cars. 2wd s10's share the same suspension as g bodies. If you don't know what a g body is, they are Monte Carlo's, cutlass, regal) that should net about 2 more inches. Word to the wise, taller coils than that will make it hard to get rid of camber issues. Now to level the rear after the coil/spindle combo up front, find an axle flip kit for the rear. Since the factory put the springs underneath your rear axle, this kit will relocate them to be above it. When you do an axle flip, you get 5" at minimum. If you want more lift than that, body lift is your only other option. Well, unless you got the bread for a long travel set up.

Oh yea, you'll also need taller shocks. I would think any parts store can find what you need for that, if not, contact a shock manufacturer like billstein or ranch and they should be able to at least get you a part number for your application. Also gonna need taller tires. And because of that, rear end regear should be your next move, otherwise it'll feel pretty sluggish. It's not a necessity, but just be aware of it. Usually, differential work like gears is pretty expensive at a shop.