Quote:

JMO
They might last for a while under or at 700 hp. The main girdle, and other stuff will not keep them from splitting the cylinders.

Good point. If somebody is buiding 600+ hp in a stock block, they should sonic check the cylinder wall thickness of several before choosing one. Many have scary thin spots, some are just "poor" production standards, and others are actually reasonably good. But you might need to check 10 to find a good one.

I did that, and went to aluminum main caps 3 years ago. So far so good.

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1