cam duration question for 416.

Depending on what you want to do, me being more of a drag strip racer, I wouldn't put anything in a 400+ inch engine that's less than about 242-245 at .050

Advertised durations aren't really what you want to look at. when selecting a camshaft.

The XE268 will idle like a stock cam in a 400 inch engine. It's not big at all. The ede cam is a slow lobe. If I had to choose either for a stroker, it would be neither, I'd find something else.