[Woodz428]

According to late 60s Ford specs, the 4v and 2-4v used the same cam. It was listed as a 306* duration and .500 lift for the earlier (probably until '64,and has the same specs as the 406(and some 390 HPs),and 324* duration w/.500 lift for the later.The first cam is #C3AZ-AA and the latter is #C4AE-B. They list 78* and 112* respectively for overlap.Of course there were a few offered through the parts dept. that are even more radical, up to 330* w/.600 lift. You have to remember that these specs were prior to the standardization of .050 lift as the point of determining duration.