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Last night as i was cruising in town i see this old 89 corvette. I was in my civic running 8 psi and i wanted to see what i have against a corvette. So we line up together and the man has gotta be over 55 years of age and his wife to. The light turned green and i took off hard and he didnt. Then he suddenly passes me like the way a street bike would take off. so i was just like whatever. So we go to the highway and i floor it and i didnt even stay with him for .1 second he flew out of there. Fastest car i have ever seen in the streets. so We stop at a circle k and i was like hey whats up how are you. And the guy is like not much just teasing people. And i was like what you got under the hood. He was like just a 350 v8 (I was thinking in my head dam my car must be slow) And then i was like that thing has to be fixed up. He just smiled and said yeah its got 800 hp. And I was Just like . I just said what does it have. He had a supercharger running 16 psi. N tercooler Headers and exhaust with no cats. He said he also had more but didnt need to mention it. So as i tell this 55+ year old man bye and he says it was fun playing with you he floors it out of circle k hauling *** and i just look to my friend and i say what an idiot i am dude.

 
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I guess I agree with you.....

 
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hmmmmmmmmmmm............let me think...........YEAH^^^^^^^

 
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If he has a 350 with 16psi, he's pushing nowhere NEAR 800hp. that guy is full of it.

and 16psi on a supercharger is a lot. most superchargers start slipping badly at the belt when you go to 15psi.....

 
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Thats what i thought too but he said he has a lot more work done on internals and ****. And it was freaking fast

 
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O yeah and on the engine it said 12 psi. I asked 12 psi and he said thats what it says but i upgraded it to 16

 
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agreed. but either way it's got a whole lot more then your civic. nice try though.

 
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why does everyone generalize everything? Superchargers can make as much boost as you set them up for. And the motors can make insane power with moderate boost, if they are setup correctly.

My friends 69 camaro. 350 block, stroked, .030 over, pistons, rods, cam, etc. The motor is over 400 ci out of a smallblock. He has a set of $3000 heads, then had some more work done to them on top of that.

This car made over 450 whp on just the motor. Now it has a procharger D1-R centrifical blower on it. It is pullied to 17 psi. The car makes around 825 hp. The belt doesnt slip.

The motor in my vette is almost identical (except for the heads). Im going to be running turbos on mine once i finish the civic. Right now with stock headers and a stock intake manifold (ported), my vette is 400 hp. 00celica6speed has seen my vette.

On 14 psi my civic went from 99 hp to almost 240 hp. How much do you think the vette will make with a 1 bar increase?

 
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^^^^ Thats true. And yeah the corvette had way more then me but i didn't know he had all that or else i wouldnt have even tried it.

 
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I believe 800 hp. Could have internal work, head work, chipped... pretty much a whole bunch of crap that we dont' even know about.

 
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The reason I made the statement in the first place is because the guy sounded like he didn't know what he was talking about. As you said, your friend bored out to 400ci and ran 17psi to get about 800hp. this guy claims it with a 350 and 16psi. doubtful.

yes you can swap pullies on a supercharger to get more boost, HOWEVER, there IS a limit to what a supercharger can boost. a supercharger is spinning WAY faster than the engine rpm, and it's speed is related directly to pulley size and engine rpm. if you're pushing 17psi on a centrifugal SC, chances are it is near it's safe operating rpms, and to push it much further, belt slipping or not, could cause the SC to destroy itself. And when an SC destroys itself while spinning 40,000+ rpm, you better hope you're behind a lead shield.

Now, another aspect of this is useability. An SC's power curve will grow exponentially. Again, because it's power is directly related to engine rpm. This means that even though your friend has 17psi on his SC, it's not making that down low. It's making it near the top of his rpm range. On an SC, the boost slowly climbs as the rpms climb. That's WHY you don't see many SC's built for much more than 17-18psi. After that it's simply impractical, because it's extremely inefficient at providing boost at those levels.

Now these are my educated opinions, so if you know someone who is an engineer and took some fluid dynamics physics courses, then please have him post. Greater minds than me explained all of the information I posted above.

 
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My neighbor has a 67' vette with a 427 small block, with.....ummmm......alot of work done to it and has over 900whp all motor. With n2o he has well over 1,300 at the wheels. Runs consistent high 6's on DOT tires and it is street legal.

 
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^^^^^^^^ That is some crazy ****! When you take a 10 second car on the street its amazing i couldn't imagine a high 6 second car

 
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hehe street legal does not equal street driveable.

 
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thats true hahahahaha just smoke those tires

 
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haha, yeah.....he only puts about 100 miles a yr on the road. Sometimes he drives it to the track.

 
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Im tired of generalizations on everything. In the past several days i have seen "you will blow your head gasket on EXACTLY 10 psi", "that BOV wont work on any less than 10 psi, and if you mod it it WILL leak." and many other similar statements.

If everyone keeps inducting a general idea from a specific incident, we will have to keep answering the same questions over and over. Instead of saying "the belt WILL slip", say "The belt has a much higher potential for slipping". Thats all i ask.

Im sure that since your an administrator, your probably even more tired of the same questions being asked over and over and over again.


Just to shed light on the supercharger on my buddies car, the Procharger D1R blower is efficient to 2000 CFM at up to 58,000 RPM. The blower can sustain 1,200 hp while staying in its efficiency range. The blower is designed for motors with a naturally aspirated base horsepower range of 425 to 550. The max boost recommended on this blower is 32 psi.

Its not like he bought a centrifical unit himself and butchered it onto his car. It was professionally done by one of the most respected race shops in california.


Civic01vtec:
My friend Tom (lives close enough to be a neighbor) has a Satelite with a 570 ci motor, running Indy cylinder heads, manifolds, Dominator Carb, custom 2 1/16" primary long tube equal length headers, etc, etc. He made 900 hp NA, and has a 600 shot on top of it. When he took the car out for the first time (never touched the nitrous), he said he was cruising at 60 mph and punched it. The car got so squirly that he ended up sideways in oncoming traffic 4 lanes over from where he was. It scared the crap outta him soo badly that he pulled over, turned the car off, and sat down for a few minutes. He is so scared of the car now that he never really drives it, and when he does, he puts it around for a few mins, then parks it back in the garage. He built it as a race car, and it ended up being nothing more than a conversation starter.

 
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I stand corrected on your friend's blower. I think if everyone would take the time to research the information such as you have we'd be much better off.

 
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Most of my friends dont like playing with "toys". They always have the money for the biggest freakin thing possible.

But at work i still have the biggest, baddest, most powerful engine......
Its a 16v92. 16 cylinders, 92 ci per cylinder. Has 2 HUGE roots style superchargers, and 2 Huge *** turbos (see picture below)

 
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That is very possible. The fastest stock suspension Lt1 I saw ran a few weeks ago, is only running on I believe 16psi, and he was at approximately 1200hp, ran an 8.01 1/4. . So 800 hp sounds very plausible for a 350, with a lot of mods that could be street driven.

 
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I have a friend in the redline club thats running a 733hp c5 corvette convertible. Would be a sleeper wasnt for the damn wine of the supercharger being so loud.
Ohh ya just to clarify some stuff for you. Most corvettes on the street are modified due to the simple fact that corvette lovers are like civic owners but with more cash. no wait RSX owners since you can mod a k20 .
Yes most owners are old men as well

so far the vette is at 455hp on the c6
callaway long tube headers and corsa exhaust
k&n air intake.

 
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a centrifugal supercharger at 17psi is not much different than a turbo at 17 psi. The compressor assembly is almost identical. I'm also glad that not everyone is doubting 800hp on a supercharged V8. Have you ever seen the single turbo vette that runs 4s in the 1/8? search for lee howie and turbo corvette. He has a 350 or 400ci small block and a turbo making over 2000HP that he drives on the street.

 
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ok? yeah we covered this? and you revived a thread no one was posting in anymore?