Agreed here also. Cams in a 4.6L stock headed motor are somewhat pointless. Now if you take the head and do some port and valve work, well then your talking about actually picking up some good power there.

Honestly the path you should go with is a power added. These motors love em. Tryin to find all motor horsepower with the 4.6L is possible but damn its expensive. Besides your limit on the stock bottem end is only 400 hp before shit wants to start coming apart. So a good shot of the juice or a nice supercharger set up and you will be getting close to that number fast.

Save your money and do the cams when your ready to build and all out nasty ass motor. We have installed plenty of cams in the 4.6L yet the only ones who really seem happy with them are the ones who do a head/cam package....while the people who just did cams with no head work tell me "well it made some more power but for the money I spent to buy the cams and install it just wasnt worth it" Make sense?

The t body and plenium, thats not a bad upgraded there is a little to be had there but not too much.