Originally posted by GrooveNerd:Does it change the duration, or the timing of the lift? It seems like it would only control the timing of the lift unless it slows down (or speeds up) the camshaft for a portion of a revolution
It only changes the valve timing points and the subsequent rpm range of the cam profile. Yes just like an adjustable cam gear would. However it can't be manually changed like a normal adjustable cam gear can. Also the heavy weight adds significant parasitic drag on the valvetrain. That's part of the trade off of drivability verses performance.
No it doesn't change duration as it just could not possibly change the duration accurately and quickly enough.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
