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Originally posted by GS-Racer01
... you would think that would have to help the low end power...
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Here's the way to think about a Vortec. It's a belt-driven turbo. The problem with this idea is there is no way to spin it up prior to launch. It's TOTALLY dependent on engine speed. You will see NO power increase on the low-end and mid-range, where most of us spend 99% of our time. Sure, they produce ungodly dyno charts at redline, but in the real world you need to change gears every once in a while. If you install a Vortec you will spend most of your time outside the curve. A belt-driven direct-drive turbo will NEVER work in the real world.
I've thought about this a lot. The only way a Vortec will ever work correctly is if they come up with some sort of variable fluid drive. That is, the Vortec turbo is driven by a variable vane fluid drive, much like a torque converter on a slush box tranny.
Vortec is one of those promising ideas that will never reach fruition. Stick with a real turbo or a real supercharger and forget these engineering wet-dreams.
If you plan to race your car a lot, go the turbo route. If you drive it mostly on the street, go JRSC.
Personally, I like superchargers. A JRSC will give you more power at 2500-RPM than a stock engine at redline. The power is always there, ALL the time, for immediate use unlike turbos, whether belt-driven or exhaust-driven.