I want to thank all you guys for the help. You just never know if your doing the right things until you ask and get more opinions. I pretty well do the things you guys have mentioned on maintenance and while the motor is sitting all winter. So far the motor has not slowed down at all. Springs are good and valve lash hasen't moved. The only thing I haven't done is a compression test which I will do this winter.
When I do a tear down I usually boil the block, check and hone the cylinders, bore if need be, replace freeze plugs, cam bearings, crank and rod bearings, check and polish crank, new oil pump, check rods, weld the oil pick up tube, check deck height and head surface, do a valve job, check seats, guides etc, replace springs and check rockers and roller lifters, replace timing belt or timing chain and of course all new gaskets. When it goes together I check and recheck all clearances, end play etc.
Maybe with more checks and maintenance I can get more than 150 to 180 passes out the motors.