Alright, I have a 1991 convertible with a new L98 17,000 miles ago, but it's not quite enough.

I'm deploying soon and will have some extra cash when I get back. I'm not looking to build a drag car, but I want to put some extra power under the hood.I'd like to stay below 400 hp so I don't blow up my rear end as easily. I don't think that will be hard to stay under, but if I go over, oh well.

I'm leaning towards an intercooled supercharger and I wanted to hear some different opinions on it. I don't know much about forced induction and so a good deal of research is in order, but I've got a whole 8 months before I can start on this anyway. My main concerns are finding out what I need to replace internally to reduce broken stuff, and finding out what else I can replace/remove to improve the efficiency of this possible supercharger.

Things that have come to my mind:

Throttle body
Intake manifold (is it worth replacing if I don't port the heads?)
Ported heads (is this a must in order to be worth supercharging the engine?)
Headers (definitely being replaced)
High flow cats (definitely)
High flow exhaust/mufflers(definitely)
Crankcase ventilation
Tuning
Injectors (what can the stock injectors handle?)
Intercooler (where the hell am I going to put it?)

The questions in parentheses are just what immediately follows in my mind when I think about the particular part.

I feel like I'm heading in the right direction, but I figured I'd ask those of higher knowledge on the subject before I went off the wrong way.

This post got rather long, but I wanted to try and explain as best I could what I'm thinking about and try to find out if it would be something that would suit what I want.

Thanks
Nathan

 

First -- much thanks for your service to this country.

Second -- My experience with FI has netted me two lessons. 1) FI is expensive 2) FI is expensive. Granted this has been my first and only FI project so I may have made "rookie" mistakes as I have done most things myself and I consider myself to be a good mechanic. I now have a forged 383 due to problems running boost on my OE L98 with less than 50,000 miles. If I had it to do all over, I think I would have tried nitrous first. If your engine is stock and makes 250 hp, you should be able to run a 100 shot which would keep you under 400 hp and will be much cheaper than going FI.

Others may have a different take on things but no matter how you go about it, to have a dependable FI setup is expensive and time consuming.

Stay safe, our prayers are with you.

90Indy

 

http://www.exoticperformanceplus.com....html?item=982

Please take a look at the above system. I would add the headers and exhaust, then install the above system.

Here is a link to the ProCharger application guide.
http://www.procharger.com/pdf/appGuide.pdf
Check out pages 19 and 20. Bob

 

I'd contact blower works as well. They are a sponsor here and most C4 supercharger guys seem to like their stuff.

 

Seeing the procharger kits is what revived my idea of using a supercharger, since I looked around google and really couldn't find anything. Checked vortec's site and kenne bell to find nothing. At that point the idea was to just get a performance cam...until this popped up.

Things like if I have to replace the fuel injectors concern me. The engine got 5 new ones before I bought the car, and I saw how much they cost individually on the bill. Apparently the new engine didn't include new injectors radiator hoses, power steering hoses, etc. Just a new block, heads and all internal components within that region. It has the original valve covers though!

I'm probably going to have about 10 grand laying around but I don't want to dump all of it in my car, just a nice portion.

 

The ProCharger system I showed you above does not need larger injectors unless you are going to run 12 psi. At 10 psi the ProCharger supplied fmu (fuel management unit) is sufficient. Bob

 

With out touching the short block or the heads, $10,000 may get you through. With the L98 you may not be satisfied with the results.
Perhaps Nitrous may be an alternative?

 

I was thinking about it and if I could find a core, fabricating the rest shouldn't be a problem. I have a good friend who does excellent work welding aluminum. But where would be a good place to put it? I thought about putting it in the radiator shroud between the condenser and the radiator, but when the AC was running it'd be air +10 degrees the ambient outside temperature going across it. Perhaps I could move the condenser when I replace the compressor in the coming weeks?

Where do you all have them placed?

 

I am really pleased with the Blowerworks kit, and you probably don't need to replace the stock exhaust to get close to your goal.