[A Snake]

Two things:

I don't know what kind of radiator you have, but you need a small AN line from the top of the passenger side (radiator) tank to the surge tank. It is called a purge line and any air in the system will be in the top of the surge tank, which is where it belongs....not in the radiator.

If you have the Galaxie surge tank, take it off and have your radiator shop install a fitting. It goes on a flattened round spot on the bottom front right side of the surge tank.

If you go to my gallery, you can get the general idea from the picture entitled "Plain but Potent" The blue and red AN fitting you see coming out of the surge tank makes a short bend and connects to the radiator.

The radiator also needs to go to the shop to have the fitting installed. I don't remember the AN numbers now, but the ID of the line is 1/4".

This fix will end your air problems, provided you have a similar set-up to mine as far as having the Galaxie or similar tank mounted on your 427.

Hope this helps.

Al