i just learned a lot by reading the post by ken, he is a genous. However I am a sheer horsepower man, so my vote is a carb.

nitrous just...isn't my thing. I like to think that my car can win a race on its own power, without injecting anything...foreign...into the engine. nitrous creates more wear on the engine and fuel lines, and is rather...volatile. if I have turbos and I get into a fairly bad accident, the car could end up fixable. if I have nitrous and get into a the same accident, BOOM. I don't like the thought of driving down the street with a bomb in my car. If I were to buy the turbo system from banks and build the engine myself, EFI, what kind of cost should I expect, estimated? As for drivetrain and what-have-you, I had planned to have everything strengthened before I put the engine in. new suspension, new drivetrain, U-joints, etc...the people here told me that B&M made TH-400 automatic transmission could handle it. stress cracks in the body makes me real scared. how might I alleviate that?

here I go, callin Banks. gonna ask em what the prices for turnkey engines start at, then I'm gonna ask em about the price for a 700 hp engine that rums premium gas, with only the plenum chamber and boost tubes polished and plated, costs...and I'm gonna ask about payment options. wish me luck!

well it's official. Banks doesn't really let you pick the engine you want...the crate engine they have available is 800 HP, and once you've bought it you can upgrade it further...you can't really choose what parts are polished and plated either. 38 thousand dollars, 50% down, the rest after you receive the engine.

I think...I'll build the engine myself, buy the turbos from banks.

every time I think I've figured something out, I doubt my decisions. the army taught me to analyze the situation, develop a plan of action, and execute. It seems that as hard as I try to do that with this engine, I can't. I did it fine with the rest of the car, but the engine doesn't seem to be working out. I've been told superchargers sound nicer than turbos, and like I mentioned earlier I don't want to lose that low rumble at low RPMs, and deep roar at high RPMs. of course I keep reminding myself that it's still gonna be a big engine and an exhaust system with no mufflers, but if only I could hear different options beforehand...supercharged, turbocharged, the same engine EFI and carb...I'm almost certain I want to stick with EFI for the reliability and responsiveness, and the gas mileage. the electronic boost control, switching between max psi sounds like it'd work for my application...run about 5-7 psi max on the street, 14-15 max on the track. 700-750 horsepower at max boost.
I don't suppose you can do electronic boost control with superchargers? and if I had some relative estimates of how expensive it would be to combine EFI engine with forced induction in a C3...it would help a lot. I know that Holley Commander 950 from Jegs was roughly $1400, but it had no intake manifold, no injectors, who knows what else you needed. I look at it straight from Holley,

http://www.holley.com/HiOctn/ProdLine/Products/C950/C950MPFI/MPFIS.html#1

looks like it has everything, a complete stand-alone EFI kit. I'd like to know how much that costs. I'd like to keep the cost of the engine under 20 grand, more preferrably down near 15. I'm gonna take a short break from all this, hopefully I'll get some good opinions when i get back. thanks for the help, guys, I appreciate it.

As for boost control - 1) Intake Mounted Supercharger (ie Roots) does not allow boost control beyond setting your pulley diameter for the belt that runs it; 2) Centrifugal Blower (ie Paxton) can be set via the pulley, and fine tuned via a Blow Off Valve (or two) but in general, not a great option; 3) Turbos can be set to exacting boost levels and changed on the fly.

My opinion of Nitrous - totally safe, would use it if all other options were exhausted. Modern Nitrous Systems aren't AS volatile as they used to be about ten years ago. There are also very stringent rules on how your system is set up (determined by the governing body of the racing venue). My old motto on the Eclipse's was "Don't Spray it, Make it Stronger". The one exception to this is the possiblity of rigging the Venom 2000 Nitrous Kit (a computerized Nitrous System) to advance spool the turbos. As of the last time I talked to them, they still didn't have all the kinks worked out - but here's the theory. When boost pressure is below a certain level that you set at various RPM points it sprays the nitrous to keep the turbo spooled. As boost pressure comes up, it tapers off the flow until you are at full boost again and it shuts off. The current program can only inject a certain pulsewidth depending on throttle position and RPM. It would still help some in spooling the really big turbos.

As for the traction and wear on other parts - my vote goes to Turbos again. Visualize the dyno chart with your expected output without forced induction. Now raise it by "X" horsepower (or torque) across the whole band. This is what a supercharger does (in general, so don't blast this to shards). Take that same dyno chart in your mind - a) lower the first 2000rpm power by a little; b) Leave the middle RPM alone; c) Raise the upper half of the RPM range by "2 times X" horsepower (or torque). That delay in power is what's going to reduce a lot of the wear on the rest of the car. The physics of forced induction note that a turbo system will make more power in the upper RPM range, but won't compare at all in the lower. All that power from your supercharged engine has to be slung by the car from a standstill - causing all kinds of drag and inertia loads which is what tweaks everything out of whack and breaks stuff. Let the car get moving a little, then let the rush of power hit it and that load is dramatically reduced. It is simple enough physics that I think everyone can picture it in your head. Downside - you won't get the hole shot or even the 60' most likely. But down the stretch, Turbos just keep on making more power and the supercharger is already maxed out.

I am gonna throw out a good place to check out for your actual shortblock and maybe even the longblock. Check speedomotive's 750hp small block chevy blower motor package. This company has a great reputation and alot of mag's use them to build their project motors. They also offer free shipping. I would consider this engines short block a good foundation for your turbo motor, the long block is perfect except I would ask for a cam set up for turbo rather than a supercharger. Also the cam is solid roller which is great for performance but hydrallic roller does not need relashing every 2000 miles or less, I would ask for them to make it hydrallic roller. They price it for a very reasonable cost considering the parts they use and the amount of labor to build it. here is the link:http://www.speedomotive.com/725_h.htm

I was looking for an engine that wasn't a stroker...specifically because the longevity of strokers is diminished...and I think that Holley EFI kit is meant for 350s. I dunno where to look for 350 short blocks or long blocks I can build up from.

If the engine is built properly and good components are used, then Its longevity should not be any more effected then the fact its used to make 750 hp. You probably wont get 100,000 miles off a 750 hp motor anyways. But besides you can ask that they use a 3.48" stroke crank if you wanna keep it 350 cubes. Just cause they got a specific package doesn't mean they wont build you what you want. Call em up and ask. These guys custom build engines to the customers specs.
This is there whole selection of packages:http://www.speedomotive.com/TABLE%20OF%20CONTENTS%20FOR%20THE%20SITE.htm

These guys also have good engines:http://www.enginefactory.com/

|UPDATED|11/8/2004 10:07:52 PM (AZT)|/UPDATED|

Check this bad boy out.....

http://www.rebuiltcarengines.com/ce17.html

As I have been told, and I after some more research a 'supercharger' or 'turbo' is nothing more than really addind displacment to your motor. And yes NOS is like a bomb, and does wear down the engine, not to mention for 4 bangers. Without these wonders (NOS, TURBO, and SUPERCHARGERS) 4 bangers would be nothing less or more than an economy car. Yes my friend's srt-4 is fast but thats only because it has a Mitsubishi turbo on it. Without that its a stock PT cruiser 2.4 litre POS