Newman cam profiles

[Bob Culver]

Considering the camshaft alone, 220 crank, 110 deg cam duration is a theoretical included cam angle of 180-110 deg. About 10 cam deg is lost in clearance and due the radiussed follower so the  angle is about 180-110-10. So from the included angle between cam flanks measured with a V cut in a piece of paper and protractor you can work backwards to cam duraton and double that for crank duration for a quick assessment.
(This applies only to cams with tangent flanks as the original Seven)

I take it from the appearance that the Newman cam is a new production not a regrind.