first all .. dont be a wise ass...and i never said it was a stock block.. its a world block high nickle. si I KNOW the block could handle 500 + hp
In your original post, you said you got a 302 block to build a 347 with... and didn't want to deal with Eagle/Scat 'junk'.
302 block generally means... 302 block... not World block.
The Scat stuff is pretty good. You may or may not need +0.001 bearings or the rods or mains, but the machining is generally pretty straight.
As for strength, the stock block, rods and cast crank generally give up at about the same time, so stuffing expensive forged pieces in a stock block is generally a waste of money. You -might- invest is Scat forged parts, but Oliver, etc in a stock block is kind of silly.
I've pushed a cast 302 crank, 289 rods w/ARP bolts and stock block to 10.6's in a 3300# car to a 10.63 @ 129.3 in the 1/4 mile, and ran dozens of nitrous bottles through it. The current engine uses an old Boss 302 crank and rods in a Mexican block, and goes significantly faster.
Point is, for a stock block, don't waste your money on exotic rotating parts. Spend it on GOOD machine work and attention to detail. GOOD machine work is hard to find. WAY too many hacks/lazy asses out there. Your machine work is more important than the parts you choose.