so I just ordered my bearings today so I can get going on putting my new motor together and I have a quick question

when grinding on the block to clear the rod bolts/cap screws what is the best tool of choice? grinder? dremel?

 

I would think carbide burr in a die grinder.

I picked up a few at a swap meet a couple years ago and don't know how I ever got by without them. I have NOT ported any heads or clearanced any blocks either. Once you have a few you wont know how you got by without them, so many uses.