Wes
forum member
I think the lockouts kill your lower end hp/tq numbers because they don't allow the variable came adjustment that happens on these engines, I also don't think they are necessary with the stage 1 cams but I could be wrong on both accounts? I am still researching these fancy 3v's I am used to my simple push rod 5.0
You're close and I am with ya man on the 5.0s... none of this variable cam, manifold runner crap and loss of displacement. That being said there are quite a few more tricks I can pull with the latest technology to help that little 4.6 out.
The cam retard will help you with creating a natural EGR at cruise that allows for greater economy. In general there are gains to be had retarding from 0-20* at WOT (which the limiters allow you to work within). The same cam principles apply to the 5.0, it is just that you had to make a tradeoff when you installed that sucker and couldn't move it.
The other issue with the VCT is durability. I've had a few sets broken with the blower cars that hit hard. With a cam that gets the pistons close to the valves having a little safety net is often worth giving up some power.
VCT is a huge discussion, lots of things going on with it but those are the high points. I've had the opportunity to do a lot of back to back testing with the cam angle on various combos.
Wes