I beleive supercharging an NA engine is between $1000 - $2000 after all materials are totalled up. I would check ZZP and Wbodystore because I beleive they have kits designed specifically for this.

Just remember that the transmission isn't cut out to do this. Your better bet would be a low boost turbo. Safer on the KR side as it is cooler, easier on the transmission due to lag, offers more horsepower since it doesn't leach off the engine, and finally better gas milage - once again the leaching factor.

 

IMO, ZZPerformance is the place to go for top swaps. They offer everything you need, AND are VERY knowledgable on 3.8's
Here is their link to the top swap kit:
https://www.zzperformance.com/grand_...&catid=109

 

so its easier to switch out say an already supercharged engine from an 04 but it will have more horses if I just keep the engine from the 03 and do it the hard way? hopefully this post isnt dead cause I want more information on this topic. I just looked up all the parts ide need to swap and its lookin around 1800$ would it be easier and more effective to just add the turbo kit from zzperformance? Ahh I have so many questions!

 

Funny how much things have changed even since this thread got started. A top swap's parts are now down to $500-1000.

Its essentially the same transmission with both engines as far as strength is concerned- thats no worry.

Faster, but less cost effective. I've seen top swaps done for ~$500; even say $1000 to be really safe, you're still really hard pressed to even find a used turbo kit that comes close to that.

IMO that SS kit posted in the zzp link is a bad way to go about this because it is way more pricey than a normal top swap, and you're really limited on pulley size. Its nicer due to the easier install, but you have to buy parts that aren't necessary w/ a regular top swap.

Definitely not easier to swap the entire engine.A top swap is somewhat labor intensive- I would say a bit less than a full engine swap. Its basically the same labor as changing heads plus a few other misc things.

You would have more power witha top swap though.

$1800 is way high- many top swap parts go for free or nearly free in on the used market- heck I've thrown out top swap parts myselfb/c I couldn't get anyone to buy them on the forums. The only pricey parts are the cylinder heads, LIM, and s/c- but none is really that steep. $1000 should be more than enough w/ gaskets and fluids unless you buy WBS's kit instead of doing the hunting yourself.

As a start look in the classifieds here:

-www.clubgp.com
-www.3800tech.com

and if you need misc parts asap (and don't mind paying more than they go for on the forums):

-www.moradpartscompany.com

 

hmm alright thats much more affordable sounding I was lookin at prices with the kit and all the different things the site said I needed ( I dont remember what site I was lookin at[:@] but I think my main fear of doing it is not doing it right or not gettin all the parts needed. What parts are 100% needed to supercharge and do it properly?

 

check on the classified section i have L67 parts for sale

 

For real. I've seen blowers, heads, lims, pretty much everything you need sitting in the classifieds sections for cheap. Full topswap kits going for around $500 too (the guy that did my tune just sold the topswap components from a used longblock he bought for $500).
Like Silverbullit said, both he and another guy were selling almost all of the parts you would need and weren't asking for much at all. Especially compared to the $1800 or whatever ZZP and W-body store are asking for their setups.

Seems like if you wanted to spend over $1500 on a topswap, you could probably get a Gen 5 M90 or a ported Gen 3 M90 or a set of modified heads thrown in, at least.

Good luck with the search though to those of you that are looking.
I should have a used Gen 3 blower with an mps system on it for sale in a couple of months too.
Not really expecting to get much for it either (the MPS/pulley will probably sell faster and for more than the blower itself so I'll probably separate them).

-Riggs.

 

3800tech.com was changed to 3800pro.com

 

http://www.wbodystore.com/grandprix/...kit-p-157.html

That lists pretty much everything I can think of- thats probably also where you got the steep price quote from. You pay a lot extra for the convenience of having someone else get all the parts for you.