Quote:
Originally Posted by expavr
Old Ron. The operating principle you describe is how the supercharger is setup on my engine (photo attached) in a daily driven car. Under normal street operation the engine runs naturally aspirated on the carb's primaries. As engine vacuum decreases the valve bleeding off the supercharger's boost closes at which time the 6#'s of boost is sent to the engine. The trick is maintaining engine RPM to stay on the torque curve without getting into it and making boost. (For some reason my 73 year old brain and legs don't communicate like they used to.) As you know CR, Cam design and Boost all play a role in making a supercharged engine street friendly. Another equally important element in balancing performance and fuel economy is getting the power to the ground. In setting up my car as a driver I used an automatic transmission with O/D and 3.73 gears. In retrospect I think any supercharged engine that produces good low and mid range torque coupled to an O/D trans a better compromise might be 3.54 gears. Just food for thought when you get around to the actual build.
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Ya need to leave those shoes with the lead lined soles at home....
