Yes you could have put a Vortech supercharger on your Blazer. But Vortech discontinued there setup for the 4.3! You might find a setup some where ( good luck ), they ran about $ 3500.00. They were complete setups that included every little thing , down to the tiewraps.
The Vortech system was a true bolt on. Meaning that it was designed for the stock engine and internals. Anything extra that you do to your engine would only enhance the setup. This system to me far outdid the procharger and windjammer setups ( they still make setups for the 4.3 ) . The Vortec also included the IS6 ignition system with the retard feature, fuel pump and brackets.
Our engines can take 8psi of boost with no problem! The plastic intake cover is tougher than people give it credit for.
just make sure that your map sensor is seated all of the way down and it will not blow off.
Look at the post (real performance from a v6) and try some of the cost nothing mods. Then try out some of the other things, but start at the least costly and work your way up to the costly and engine tear down options. Even the tear down items will ony require a weekend!
Try (superchargers4less) they can give you a good start and are the cheapest.
The only difference from your engine to mine is the missing EGR valve and the roller trunions. Other than that they are exactly the same. Just a different program of the ECM. That negated the EGR.
If you are going with the supercharger , think, well you have to, get headers and a less restrictive exhaust. the CAI is a given. MAF is fine (your discretion if you want to remove your screen or not) Leave restrictor altering alone! Why waste gas. If you want the same thing just switch to a 160 deg thermostat! Which I really don't recomend! But it is the lesser of the evils. 180deg is the lowest that I would personally go.
Some things that people don't think about, If you make your engine more powerful. UPGRADE YOUR BRAKES!!
Enough said.
http://photobucket.com/albums/c391/Blazer111/
Super charging a 2002 blazer Xtreme
