ok stroker guru's, gig this one

What do you consider "high mileage"? I know of a few that are passing 20K miles including years of intermittant strip time. You will not get 100K from them. But for most of us, something like 4-5 years of 3-5K miles a year is acceptable. They do loosen up faster. Usually because ring stability gets worse witht he short piston. But it's not a question of tons of oil use or big problems. They just wear faster. Even a performance built factory displacement suffers from faster wear if you're out hammering on it.