Grand Prix Store Cam #1

200 degree/212 degree at .050
Intake Lift .315 (.504 lift at 1.6:1 rocker ratio)
Exhaust Lift .325 (.520 lift at 1.6:1 rocker ratio)
115 Lobe Separation


ZZP VS Cam

206/216 at .050"
Intake Lift .320" (.512" lift at 1.6:1 rocker ratio)
Exhaust Lift .317" (.507" lift at 1.6:1 rocker ratio)
115 LSA

So how much of an effect does the duration of a cam actually have on the power produced? And between the the GPS and the VS, which intake/exhaust lift would be best for my setup?