well Don i run a 327 2 bolt main, and to say the least i have put that engine throu hell and back, so i know 2 bolt mains are strong enough for 380 hp, b.c im running 410 to the weels at the fly weel its about 418hp, and that engine has turned 7000rpms with out a problume so 2 bolt mains are good i think. oh ya i have about 20,000 miles on it, most people will say its a fresh engine if its turning 7000rpms, so its fresh but not brand new.

Cd