new 396
I'd wait 100 or so before 2000-5000, and then another 400 before winding it up totally.
Also remember not to sit on the highway at a constant speed for a long time for the first 500 miles too. Shift into 5th, then speed up then 6th then slow down a little, etc. Vary it up a bit without driving your fellow highway drivers nuts.
Ive been taking really nice backcountry drives from 1500-4000 rpm with my Camaro's new 387. Really a pleasant thing to do and it does wear the engine in nicely going up and down in RPM from 0-50 mph.
chris
i asked texas speed and they said with the poly plasma rings and all the parts will be brand new and performance oriented, they said i would be over doing it if i went 100 miles before dyno tuning. the thing is that in dyno tuning they are going to romp all over the car and i don't want to break anything because it hasn't seated right

