View Full Version : supercharging . . .
11-03-2003, 06:06 AM
I am looking into superchargin my 93 Z, and got a few quotes on used ones. So far, a possible option is from a 1999 grandprix ($450). Does anyone know what kind of boost they provide, and what i would need to do to get it running on my car? Any ideas?
11-05-2003, 09:44 PM
i guess u need 2 get the right kit 4 the LT1...
11-05-2003, 11:22 PM
I would suggest a kit that is made for the LT1 as boosted suggested. The reason I say this is because you run into having to do a lot of fab work, so if your good at fabbing a kit up then that might be right for you. I may be wrong but I do believe the Grand Prix have the whipple style charger and if so then there will be some MAJOR fabbing to get this to work since they sit on the intake. There is a guy over on Camaroz28.com that took one of the chargers off of a Mustang or a Lightning and he still doesnt have it fully lined out but going by his pictures it has been a long thought out process.
11-18-2003, 09:30 AM
What? It's called a roots, and you don't need to mount it on the intake???.....
Look at supercharged Mercedes engines... They use the roots, and they are mounted inverted, and beside the engine..
Anyways, being an owner of a supecharged car using the Eaton M90 supercharger, i will correctly answer your question:
It is reccomended for 3.0L - 5.0L engines, produces about 10psi of boost (can be, and has been increased upwards of 15+psi by changing the pulley diameter) At 12000 charger RPM it will move 510CFM @ 10 PSI. The temp at 10psi (12000rpm stock) is usually around 180-200F, and on a 3.8L engine it adds about 50 horsepower (and replaces what is leeched to operate the charger).
Here are some other things you might find usefull :
A 1999 Pontiac Bonneville SSEi with a 3.8L Supercharged 3800 Series II engine will produce 250HP and 280 ft lbs @ 3500
The same SSEi with a 3.8L N/A 3800 Series II engine (with MPI) will produce 205HP and 230 ft lbs
I find the older Series I 3800 engine had the most gains, although it used a smaller version of the M90 used in the series II (the M62)
It put out 170HP and 225 ft lbs N/A (with MPI), and 225HP and 275 ft lbs Supercharged.
***Those are all STOCK figures
You could probably use these figures, to compare them, and/or use them in making your decision.
Remember, all of these engines are 231's, not 350's....
You might also find this usefull although it does not specifically pertain to your engine
I hope that was of some help to you
11-18-2003, 11:34 AM
Geeeez some people are really touchy about some topics arent we.
11-18-2003, 07:56 PM
http://web.camaross.com/forums/showthread.php?s=&threadid=122102 Ok then well check this out and tell me its not on an intake.
Also if it doesnt sit on an intake where is it going to force the air? That is what a supercharger does force air into the cylinders which makes more power.
11-19-2003, 05:40 PM
WOW, what a fabrication job. Centrifigal superchargers don't need to sit on the intake but don't produce the instant boost of a screw type supercharger. Eatons are screw type which turn the air toward the middle of the rotors. Roots have rotors inside that push the air but are shaped like rolling pins secured to a common center and roots superchargers rotors turn away from one another and press the air against the outer parts of the inner case. I run a 4-71 roots blower on my truck and have done much research on history and design of superchargers.
11-19-2003, 07:45 PM
Yeah I knew Centrifigal didnt sit on the intake but the one that he was asking about does am I correct in thinking this? The centri still does the same thing it just uses the TB or Carb to force the air into and into the intake correct? You are correct that guy did a lot of fabwork to get that charger to fit :)
11-20-2003, 01:00 PM
Thanks for all your inputs! I took a look at the link FANTA-Z posted. Quite interesting. It does look like a lot of Fab. work, but it can be done. Im interested in getting started. Pickup a used truck for the winter and get started. I'm not a genius on the topic of supercharging, but I do know the basics and a bit more.
I can do the fab work, as ill have plenty of time, know a lot of ppl with the equipment and who can also do this. Any1 have any suggestions to where i should start? Thanks a lot!
11-20-2003, 03:39 PM
Im sure it can be done and I guess you can say its proven since the guy did it on the site above :) I really dont have any suggestions but maybe you can email that guy and get some pointers from him. If and when you do this please take the time to take pics and some notes and let us know how it goes or is going over these winter months. It will definetly be some good reading over the sad months that I cant really drive my car :)
11-26-2003, 07:41 PM
I have a used procharger, call for info. (414)324-4388
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