Help - Need wise engine break in advice!

[ubtripn]

I have installed my new 350 crate engine. It has vortec heads, edlebroke intake/carb/headers, anyway:

1. Are these crate engines built with tighter tolerances than the originals? Meaning, as everyone knows, engines of today have much tighter tolerances which contributes to not requiring a break in period when you buy a car. (Some say.)

2. Are any of the break in procedure recommendations verifiably required? I have seen new engines put on dynos and run up to high RPM's. How much of this break in procedure is now either obsolete or not needed?

The givens for me are the oil change with filter at 100 miles, then 500 miles then regular intervals.

Beyond that I have (for the past day) been driving it like normal with a few runs up to 5000 RPM's. I have tried to avoid idling for too long or staying at one speed for too long.

Please give me your wisdom, thanks!

(P.S. Don't know if it's a roller cam, engine was a mispick that was resold.)