Anyone know how to get the valves out? I have heads with unknown mileage and since I'm going in this far I might as well clean the valve and seat and replace the oil seals, however I've never seen any oil seals go bad before.

Likely a valve compressor.

 

I usually only need to remove when scrapping heads.  And then I jsut smack them with an impact socket and the keepers break and it's easy to remove the valves,.

Does the shim over bucket design use oil seals?

 

From what I understand the OTC 4572 will work I need a magnet for the retainers

 

 

Do I really need to lap the valves? from my understanding it's carbon build up.. I ask because I can't get anyone to give me a answer if lapping changes the valve clearance enough that the shim is no longer good.

Depends on how much you lap.

 

I would not think it would affect vavle clearance very much.  It will make it tighter if anything.