Bingo! It's just about useless to put any other cam other than a stock one for the stock setup. The stock cam is not a bad piece, the heads are the big restrictions. There is an article in the 5.0 forum and it still should be on the first page about using a stock cam and achieving 400hp, you may want to look at that...
TFS 170cc on sale right now haha. Smoking deal for $999.95.
For performance, you will not gain anything from a cam, but if you are going to do it regardless you are probably going to want to get new valve springs. I'd go with a Steeda #18 or #19, or a Crane 2031 before I went with a B or E cam.
There have been multiple tests of just adding 1.7 rockers that caused valve float! And thats bringing the lift from .444 to .472, which is nothing crazy. The tests I have seen where they gained with adding a cam to a stock headed 5.0 they did the springs too. I'm willing to bet that adding the new springs on the stock motor would have gained as well. But that doesn't sell camshafts now does it?
It's an ok cam, and back then it was one of the only ones available.
Both Ed Curtis and Jay Allen both advised me to stick with a stock cam or custom, and the only OTS cam suggested before was a WG-1087 which is old school but Jay says it is the BEST OTS cam ever made. And he doesn't BS. This is just my $.02