coolant plugs

[jerritt]

does anyone know the size or where i can get a set of these plugs? they are the screw in plugs in between the 2 freez plugs on either side of the block. the guy i bought the motor from did not leave them in there and i cant get them out of my old block. thanks a lot i can take a picture of what im talking about if thats not enough of a description.
jerritt

 

[Nick Micale]

Hardware store, 1/8" pipe plug.

 

[Paul Lohr]

I would use brass or aluminum, a few wraps of teflon thread tape.

 

[John Larkin]

Another trick is to use a radiator petcock for future coolant draining and flushing of the block.