I swapped to a 27K L26 to put my cam and top swap on. I've babied it to a point, but after these threads of nightmares I got it on the highway yesterday and opened her up... Hit OD at 110, I let off several seconds after I burried the needle but it was still pulling like a beast. Took the boys out for ice cream later yesterday evening in it.. LOL..
With high mileage, there are no guarantee's with what you'll get. I mean that motor ran for YEARS with a consistant setup or maybe it was wound up so many times Ray Charles could see it was ragged out before it was pulled and you purchased it. There's no telling. But after it sat, you picked it up, threw new to it parts on it and dropped the hammer so to speak... Also, if anything was broken loose on the top end (intake, heads, ect) possibly coolant ran down to the crank, got in the bearings, soaked in some, then ended up in the oil. That means that bearing is hosed. IMO, once bearings see coolant, it's a matter of time before they spin. I've had two motors (3100's one mine one my grandfathers in his lumina) that blew intake gaskets. My olds lasted a year, the Lumina is still running, but knocks at higher RPM's so it's will go eventually. coolant washes the bearings of the oil and it's hard to get oil to stay where it needs to afterwards...
But anyway, I rambled.... Again, I hate to hear this bro and wish circumstances are different. If you leave the platform, you better keep your azz on the forum.. LOL