69 fb 340 barracuda freeze plugs/replace ??

I'd pull the motor and replace all the plugs (dont forget the ones in the heads). Those little monsters in the heads bit me once, when one on the back popped during a 1-2-3 Power Shift in my 340 powered '74 Twister. I had just painted the car and I was not thrilled about the thought of yanking the motor, so I put a temporary rubber expansion plug in the head.

Even worse, I noticed that my 6-71 Blown 340 Duster would occasionally drip 1 or 2 drops of antifreeze from the bellhousing when I parked it. I knew what it was (rear plugs behind the flexplate), but I didn't want to pull the transmission until I had the 4-speed ready to install in place of the 727... It didn't agree with my schedule, it popped, along with the one thats shielded by the driver's side motor mount.