[Dark_5.0]

I ran the E303 cam for a while and it made good power but idled like crap for the most part.

E303 Dyno

The custom cam I have now has .566 lift and idles great. I havent dyno'd with it yet but it does make more power cause I trap 2 mph more than with the E cam.

If it were me I would go with the big Z cam or a custom cam the E cam is a pain in the @ss with all the idle and vacuum issues it has.

Just make sure you get an intake manifold that matches the powerband of the cam you choose and you will be all good.