Make sure you get them in right and tight. I had just finished a rebuild and the first time I took the truck out on the hiway and got it up to speed, the pressure blew out the oil galley plug on the back of the block. Puked a gallon of oil out in a matter of seconds, made a fine mess of everything, and I had to pull the engine back out of the truck to get a new one installed right. Needless to say, I was not a happy camper.
