Good point about the later castings. I was amazed to find virtually no cylinder wall wear on a hard-worked small block 400 with 75,000 miles on it from a dually pickup that spent its time towing a gooseneck cattle trailer. We changed a set of cracked cylinder heads after an overheating episode, honed the cylinders, did a re-ring and standard diameter bearing job, and the guy put another 50,000 hard miles on it before he sold the truck. The thinwall casting blocks and heads must have better alloys!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!