Originally posted by 383 chev
L.O.L L.O.L L.O.L build the 400 no replacement for displacement steve morris racing built my engine when i called there to see if they had a 4 bolt block he said that they are weaker oh YEAH i run IT ON THE STREET with no steam holes every1 has an opinion call the pros!!!???
Yeah, everyone has an opinion and it was the opinion of the pro engineers at GM that the motor needed steam holes and I'm not about to try to second guess them.

It's my humble opinion that a 400 will run just as long as a 350 if built properly and it'll make more power doin' it.