You goal is to allow everything to seat. This is accomplished by the parts moving **AND** going through thermocycles.
Assuming this is a hand rebuilt engine... I'd run 5w-30 valvoline. Let it idle for 10 minutes, shut off and let fully cool. Then run it at varying rpms for about 1/2 hour with light speedups and slowdowns. Park and let it fully cool. Then drive it like a grandpa for the next 300ish miles. Change the oil & filter to the exact same oil and hit the track. Up around 2500 miles switch to fully synthetic.
Here is what I have always done with normal engines and race engines.
Run it for 500 miles on regular 5w-30 motor oil and avoid extended periods of high boost, but dont baby it all the time, drive it aggressive without being too aggressive.
Then change the oil and filter. and drive it the same way for 1000 miles, then change out to synthetic oil of your choice. I have always used Mobil One with fantastic results.
Also, use a quality oil filter such as K&N, it has alot more filter media in it than Ford's filter and will trap more particles.
I put 2400 miles on my built motor before it ever hit the dyno or track and I have over 200 passes on that motor with the majority of them being in the low 11's or 10's without ever having one single problem, no oil consumption or anything.
Getting everything to "seat" as previously mentioned is the most important part.
Good luck with your new engine and enjoy the newfound power once its broke in...
Like I said on the other boards, I had told you I WAS SORRY I was not able to get your engine at that time like I wanted to, I needed that money for our NEW house. I was able to get a loan and my wife has helped me out with the new stuff.............................................
I usually put about 400-500 miles on the motor while "being firm on the throttle" but not beating on it. Then I change the oil at 500 miles and get more agressive and usualy by 600 miles its on the dyno or went to the track by then
Then I change the oil again at 1500 miles and again at 3000 miles, then shes good to go. [smilie=fingersx.gif]
The engine builder doesn't really have any special treatment per motor. An engine still breaks in the same whether stock or built. The only difference with built is you should be able to seat the parts much quicker as the parts are better. Instead of 500-1,000 miles on a stock motor you may get away with a 100-300 mile break in on a proper built motor.