At 04:10 PM 3/18/2003, you wrote:
>This comes as a suprise to me.  My understanding is that with newly
>honed cylinder walls, the friction and heat generated the first time the
>engine is run is greater, and therefore should only be run at an idle
>for the first bit of it's break-in.

The 2000RPM for 20 minutes thing is all about cam/lifter break-in.
The cam and lifters want LOTS of oil until they get somewhat seated in to
each other. One of the worst things you can do is let an engine idle
a lot during cam break in. Those first few minutes of a cams operational
life determine a lot about how long it will last...

After the cam break in, change the oil and then drive it mostly llike
normal, but take it a little easy on the RPM's and especially don't lug
it for the first 1000 miles.
I usually change the oil after cam break in, again at 250-300 miles
and again at 1000 miles. Normal oil change schedule and driving habits
after that.

Cheers,
Steve