[blykins]

Most 427ci small blocks are built with aftermarket blocks these days. They will support well over 1000 hp.

Rod-to-stroke ratios are pointless. It's just a meaningless number and has absolutely ZERO to do with how an engine revs.

Large main bearing diameters do not result in spun bearings. A 429/460 has the same size mains as a 351W but yet we all use them in extremely high rpm, high horsepower pulling truck engines.

The aftermarket Windsor blocks DO NOT USE Chevy main bearing sizes. None. The aftermarket blocks use Ford Cleveland main bearing sizes.

Too many wives tales and utter nonsense in this thread. Holy cow.