You should always be concern with the cylinders getting out of round any time you do machining on the block. I know SB Mopar racers that torque the main caps on, torque the oil filter adapter on as well as the timing cover on with two torque plates to the block when doing the finish honing I use to have my M.W. motors honed with a torque plate on one side and a cylinder head on the other side with the head gaskets that I was going to use I make sure the cam bearings are installed also when honing the block Little things can mean a lot