What to do with intake off?

[engrdean]

In order to remove a broken bolt out of the block, I've removed my intake manifold. While I was at it, I went ahead and removed the valve covers. So, my question is, while I have the motor opened up, what sort of cleaning can I do? My plan is to degrease, sandblast, and repaint the intake manifold and valve covers. Anything I can do to clean up the block or the valve train without (any more) major disassembly? It's a 1970 350 with everything original as far as I can tell, and it hasn't been driven in about 15 years. It has spent most of its life on a farm and it is in desperate need of some TLC. I have started it recently, so I know it will run. Other than cleaning, if there are any other suggestions for routine maintenance or potential problems I can check for while I have things apart, I would appreciate it.