Where is the frost plug on a 1988 Chevy half ton v6?

Answer 1

There are a few of them on engines. They are cups about 2" around and a 1/2" tall that pressed (pounded) into the engine. You will find these on the engine located in the heads and block. In the heads they normally are one front and back. In the block you will find them in the front, back, and down each side. This is the same on almost all engines. Replacement frost plugs(expansion plugs) do come in a screw type, which allows you to place them in the hole and tighten in place with a wrench. Removing old one is not that bad, with a punch push one side in to engine to try to roll it sideways, where you can grab it with a pliers and pry it out of the block.