The trucks used a no pressure cap.
You can find one here as well as other places.
http://www.oldchevytrucks.com/cart/index.asp?sdes=ME270
Click on details.

There are also several on Ebay.
http://www.ebay.com/sch/i.html?_trk...+radiator+cap&_sacat=0&_from=R40


Harold

Last edited by Harold46; 10/28/2013 1:14 PM.

Harold
Is a restoration ever finished?