My dad's 87 Cutlass (he bought new in 88 wit 3k on the odo) had 279,000 on her when we sold it in 2003. He had the stock 307 with either a TH200 or a 2004r transmission. Mostof it was highway miles asthatcar as been all over the country and was our family car for 12 years. After only 1 year, it blew a head gasket; a few years later, the intake gasket, alternator, and other basic stuff. in 1999, my dad took it to a local mechanic at our current home in Iowa; (he bougt it whe we lived in Cali) to have the carb rebuilt. One thing the Iowa guys did no know was that it was a California model and had a California carb with high altitude jets. They decided that since the carb had "extra holes" that they needed to fill them in with epoxy. The car never ran the same since. But because of the high milage on his 307, my dad loves the engine. It was still solid the day we sold it, it just needed a new carb.
My Cutlass has 97K and no special stories behind it.