GM's Variable Valve Timing System Performance Test - 15 Degrees Of Separation - Speed Parts Testing

The tough guy in you says to stab that cam in retarded a few degrees for maximum top-end horsepower, while your more practical alter ego suggests advancing it a hair for improved low-end torque and driveability.The tough guy in you says to stab that cam in retarded a few degrees for maximum top-end horsepower, while your more practical alter ego suggests advancing it a hair for improved low-end torque and driveability. As tempting as it may be to let your tough side deliver a swift kick to your practical side's shins, the installed centerline you settle on is often a compromise between the two extremes. However, as the Big Three have started integrating variable valve timing (VVT) into production V-8s, that needn't be the case anymore. Now you can have the best of both worlds.


Photo Gallery: GM's Variable Valve Timing System Performance Test - Hot Rod Magazine

Photo Gallery: GM's Variable Valve Timing System Performance Test - Hot Rod Magazine


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