I've never understood superchargers. You have to belt drive them, automatically taking power from the engine to make power for the wheels. A turbo runs off your exhaust, which you're gonna have anyways! How is it even a competition??

 

because the superchargers powerband is in sync or proportional to the engine speed, in other words no boost lag, you can get way more power out of a decent sueprcharger than what it takes to spin the thing, turboes especially twin turboes are sweet as hell, the lil one picks her up off the line and once u get goin, turbo number 2 just throws you across the finish line. the turbo lag is why people do the twins to keep up w/ the off the line power a sueprcharger makes

 

i am preetty sure 7000 hp top fuel dragsters are supercharged!!ya the ones that go 0-300 in less than 4 seconds. not that it mattters for our trucks but why wouldnt they use turbos if more power is to be made?

 

the turbo would have 4 seconds to fully spool up where as the supercharger gives that dragster the power right away and sends it out likea rocket

 

ive always been toldthat superchargers are better for racing applications (like a track only car that is trailered in and out, not street legal, etc.) but turbos are more streetable.

 

Actually, there is no "one runs all the time", and having a sequintial turbo setup on a V8 would be a chore to say the least. It's posible, but would not be something that you should do by choice. Twin turbo would be more feasible and more easily engineered. That being said, single turbos are better for higher horsepower applications and it is one less thing to go wrong. There is a reason that all the Supra, RX-7 etc guys get away from the sequntil turbos. Even alot of the Stealth and 3000 GT guys are starting to play with single setups. BTW, the sweunitla setup makes great sense on the RX-7 and Supra due to the layout of the engine, a straight six.. a rotary etc. As far as "one runs all the time", the smaller of the two turbos, the one that feeds the seoncd one still has to be spooled... at what RPM it spools depends on the size of the tubo, flow of the exhaust, downpipe etc. And yeah... you only need one turbo timer(this is optional anyways) one boost controller, one blow off valve etc.

 

Its actually relatively well known that the turbo has much higher potential. However, to match the horsepower numbers the turbo would have to be very large and would have alot of work to be done for spool up. There is a reason the big turbo guys(Titan Supra, Easy Street WRX, The Neon, etc...) use a big *** shot of nitrous, its too spool the turbo. Turbo charged cars are down in the six second range now... so they are rapidly catching the supercharged guys. There is just a bit more to over come, spool up time, heat, etc etc.

 

Only twin screw/roots superchagers make some psi at lower rpms. The centrifical superchargers need rpm just like a turbo.

Power braking the STS/SMT system gives full boost in 1st gear.

The dragsters use twin screw/roots superchargers. But superchargers need hp to run them, unlike a turbo. Since the dragsters are making so much power, the 900 hp it takes to run them doesn't matter.

On small engines like ours, the loss of hp is noticeable.

For example;

If a turbo motor makes 500 hp, it puts 500 hp to the drivetrain.

If a sc motor makes 500hp, it puts 500 minus what it takes to turn the sc, to the drivetrain.

Our motor, without internal modifications of forged parts especially in the shortblock, can safely handle around 7-8lbs of boost.

A sc will have to make more boost to equal a turbo's hp output, so if a turbo is making 8lbs and a supercharger is making 8lbs, then the turbo is making more power to the wheels.

I make 450+ to the tires at 8.5lbs of boost. With drivetrain loss, that means the motor is making around 525-530hp.

Personally, I love twin screw superchargers, but they are not as good on the street for a daily driver and they are easier on the parts of the engine and drivetrain.

If you want to read some really interesting information on top fuel engines, go here
http://www.motortrend.com/features/c..._fuel_numbers/

 

IVE GOT AN IDEA LETS JUST RUN BOTH ON ONE TRUCK LETS PUT A SUPERCHARGER ON AND A TURBO, THEREFORE YOUCAN RUN A MASSIVE TURBO BUT HAVE NO TURBO LAG BECAUSE OF THE SUPERCHARGER!!! LOL!!!
I HAVE THE PAXTON SUPERCHARGER AND I LOVE IT. YEAH IT ROBS ME OF PROBABLY 10-15 HP BEING BELT DRIVEN BUT SO DOES YOUR ALTERNATOR THE MAGNETIC FIELD IN AND ALTERNATOR TAKES MORE POWER TO TURN THAN A SUPERCHARGER SO WHY DONT WE JUST TAKE ARE ALTERNATORS OFF TOO!!!!!!!!!! THE FIGHT OVER TURBO VS. SUPERCHARGER WILL ALWAYS BE THERE ON MY TRUCK I WOULDNT WANT A TURBO THE SUPERCAHRGER IS ENOUGH ITS QUIETER AND IT DOESNT HAVE A BUNCH OF PIPING RUNNING UNDER THE HOOD. NOT TO MENTION I DIDNT HAVE TO SPEND $900 ON CUSTOM EXHAUST WORK. ALL I HAD TO DO IS BOLT IT ON!!! BUT I REALLY DONT CARE WHAT YOU IMPORT TUNERS WITH A DODGE FETISH DO TO YOUR RAM JUST HAVE FUN DOING IT THATS ALL THAT MATTERS!!!!

 

People do go that route. But I think i am much more likely to try it now that you have used large capital letters. BTW, the STS kit does not require $900 worth of exhaust work. Sweet truck ya got there!!!