Quote:
Originally Posted by Xavier
Does anyone know if the Vortec is a Procharger?
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Vortech, Paxton and Procharger are just makers of Centrifugal Supercharger .
The favoured blower for the 260 is the Kenne Bell, (there are a few 260s with the Roush Charger) both Twin Screw, There is one car (VIN 001) with a Vortech.
What is the difference between a Centrifugal Supercharger and a Twin Screw Supercharger?
A Twin Screw type Supercharger is a positive displacement supercharger that forces air into an engine with two rotating, intermeshing rotors. A centrifugal Supercharger has an impeller that pulls air through the center and directs the air into a scroll using centrifugal force. The scroll resembles a large blow-dryer with a circular shape and a discharge tube. The air is directed in the scroll, pressurized and forced out of the discharge tube and into the engine. The two types of superchargers have different performance characteristics that have led to several debates on which supercharger is preferable.
Proponents of Twin Screw blowers argue that more boost is available at lower RPM to provide off the line acceleration. Centrifugal supercharger enthusiasts argue that Twin Screw blowers are limited at higher RPMs and can increase air temperature and decrease horsepower.
What is the difference between a Centrifugal Supercharger and a Turbocharger?
Turbochargers are powered by exhaust pressure while Centrifugal/Twin Screw Superchargers are driven from the engine crank pulley. Centrifugal/Twin Screw Superchargers allow you to attain boost and horsepower on demand. A turbocharger requires the exhaust pressure to build resulting in a "lag" in horsepower increase. A turbocharger will typically have a higher discharge temperature than a Centrifugal/Twin Screw supercharger. This higher temperature is a result of the turbo impeller spinning faster and the heat generated from the exhaust gas.