The 1958 Isky catalog specs the E2 cam at 256/256 @ .430".  This certainly doesn't match the Ford specs on the 290 or 302 deg cams used in the blower engine.  It does appear to represent the baseline 1957 Ford B7A-6250-B 312 245/270 hp cam though.

I realize Isky did change camshaft timing events through certain years yet retain the same identifier, which is why I would like to see what is in their 1957 catalog.

There is also an article on the 292 engine in Popular Hot Rodding Aug 1965 that discusses the Isky E2 cam and the 312 285 hp engine:

Doesn't make sense if the E2 cam duration/lift appear to represent the 312 245/270 hp cam.  Maybe the same duration and lift, just the timing events were ground differently?

I started a new thread on this subject to reflect the different subject matter over the previous one titled "I need help identfying the intake".

Regards,

Dennis