There are a lot of Ford C-Series trucks covered on one page in various episodes of CHiPs
http://www.imcdb.org/vehicle.php?id=547697

This isn't one of them:
http://pics.imcdb.org/12851/snap494.2.jpg
It's actually a Chevrolet or GMC Steel-Tilt Cab.

Plus, there are years and year ranges to Ford C-Series trucks that are being overlooked.
1963-67:
http://www.imcdb.org/vehicle_577113-Ford-C-Series.html
http://www.imcdb.org/vehicle.php?id=548480

1975-84:
http://www.imcdb.org/vehicle.php?id=489940

The one in the CHiPs episode #3.11 is from 1961 or 1962. The one in episode #405 was made in either 1975 or later. For the other two it's anybody's guess.