Being one of the very few Duratec drivers out there that had hot cams, I can tell you that lots of duration doesn't kill the bottom end as much as you think.
If my memory serves me right they were 280deg and very little over stock lift. Since these cams were made by SVO a while back, it was very hush hush at the time. Before you even think about it don't IM me for specs because I don't have em. You can try Chris Rienke, he might be able to give you a little more info on them.
Click here to see my dynos I just wonder how aggressive those ramps are, the ones I had had a pretty high rate and made a decent amount of bottom end.
