Clois,
There has been racing development done on ford big blocks but not much in the last 25-30 years. Most racing development has gone to the small blocks. That being said, there is no reason you should be having bearing problems with the 428, although I feel like 3 hours is not enough break in time for a street engine. The bearing probably seized because of
oil starvation related to an obstruction of the hole that feeds
oil to that bearing or the bearing just being too tight. You will probably never know. Have the machinist double check all clearances when he reassembles the bottom end and write them down for you. Give the engine about 500 miles to break in and then go for it.
Just spent this week replacing a head gasket that blew between 2 and 3 and between 3 and 4. Too much timing or maybe the head bolts came loose....I'll never know.
Good luck
h dog