Greetings . . .

This past weekend I was reading the '56 printing of Ed Iskenderian's book on valve timing:

In the back he includes a catalog of camshafts that can be purchased outright - inlcuding some interesting regrinds.

I was checking out the specs on the the dual pattern D.P. #2 for the 216:

The exhaust timing seems crazy eek (67-33). 280 degrees of duration? That's 30 degrees longer than the intake - and longer than any of the other grinds on the page! Is this perhaps a misprint?

Any insights will be greatly appreciated.

Keith