Proper method for determining bearing clearances?

I always did both hard measurement and plastgage, but have never seen plastigage go wrong.

For standard production tolerance it should be fine and will show taper quite well.

I don't know how much error is standard with snap gauges and mics, or dbg's. Lots of operator variance on that.

Just be careful how many times you tighten the crank and rod bolts, so they don't get overstretched and will fail....

And you don't want one of those to fail....

It is recommended that you only tighten a main or rod bolt 5 times, then replace.... After that you are taking chances...