Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run.
Testing carburetors on an engine dyno can sometimes be misleading. We've all seen tests showing large-cfm carburetors making more power—even on a small engine that nobody in their right mind would run such a large carburetor on in the real world. On the street, idle quality and part throttle drivability make the difference between a car we drive, and one we wish we drove more. When we test different components on an engine dyno, we can do more than compare power at wide open throttle. Putting a load on an engine to simulate cruising down the road or up a hill can be enlightening.
aPhoto Gallery: Carburetor Dyno Testing - Flowing Results
Compared to roots blowers, the twin-screw supercharger offers both increased efficiency—thus lowering the inlet charge temperature, and a reduction in parasitic losses associated with turning the blower.
The performance world already knows to respect any machine sporting a Hemi, and a late-model, 6.4 Challenger is no exception. From a visual standpoint, the Challenger is certainly the best looking of the retro muscle cars, bettering both the Shelby Mustang and Camaro ZL1. In terms of all-motor performance, the 392-inch Dodge has the competition covered thanks to a power rating of 470 hp, but unlike Dodge, the competition has embraced factory installed power adders. Both the Shelby GT500 and ZL1 Camaro sport roots blowers on top of their already potent V-8s. Thanks to a little forced induction, the two supercharged power plants eclipse the 6.4 Hemi by over 100 horsepower.
aPhoto Gallery: Kenne Bell Twin-Screw Supercharger Kits
A look a the latest parts from Lokar, Flaming River, JLT Performance, and more!
Billet (& Stainless) For Your B/RB
aPhoto Gallery: Hot Parts - July 2014