This one had 73k and my wife's (Bumbleebee Rebuild) had 80k. Both motors were in amazing shape with the bearings looking new. The is one was a tranny problem. The wife' s had bad valve guides but we did a backcut transmission and refreshed the motor. I know a couple that have hit 100k miles. Just do the oil every 3500-4k and don't let it run low on oil.