Thread: Engine Break In Advise

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I finally got to putting a remanufactured Chevy 350 I've had sitting around into my '79 Pontiac Firebird. This is the first time I've worked with, or owned for that matter a "new" engine. I'm a little nervous about the initial firing and breaking it in properly. I've found two different sites suggesting a similar technique for breaking in remanufactured engines. Basically this:
1) After priming oil pump, start the engine.
2) Run the engine, w/ the car in park, for 20-30 minutes at about 1500-2000
RPM to provide good oil presssure.
3)Shut it down and change the oil and filter while the engines still warm.
4)Take the car out and accelerate from 30-50mph then back down to 30mph
approx. 10-15 times, while not using the brakes to decelerate to keep
vacuum up, to seat the rings properly.
5)Run the car normally, no heavy loads, etc, at varying speeds for 500 miles, then change the oil and filter again

Question-one site suggest "easy" cruising for the first 50-100 miles before
doing the 30-50mph acclearation sequence, the other does not...Any
advice? Will it really matter?

Other than that, does this sound reasonable to you guys? Any tips or suggestions?
Mike