Here's a quote from The Ford Falcon News' "Rules for Six Cylinder Cars" which contains all you need to know about the engine colors:
"Color of block and head assembly: Gloss Black (Hi-Temp)on all engines. The only exception is as follows:
After June 1, 1965 production date 200 C.I. engines (the entire assembly including valve covers and breather) were a medium Ford blue except the 289-it was Gloss black with Gold Valve Covers and air Cleaner(Gloss Black snout).
Note: Some exceptions have occurred on cars after the June 1st 1965 date. Such as- an original owner, never touched car with a 170 engine. It came from the factory with Ford medium blue block and cylinder head with red/orange valve cover and breather.
Color of Valve Cover and Air breather:
144-Ford medium Blue
170-Red/Orange
200-Red/Orange (after June 1, 1965 production date entire engine Ford Medium Blue)
Recommended Paint codes:
Red-Orange, Dupli-Color DE-1605 or Martin Seynour 7892
Ford Medium Blue, Dupli-Color DE-1606 or Martin Seynour 7958
Engine Black, Dupli-Color DE-1613 or Martin Seynour 7882
Krylon Semi-Gloss Black code#1613 (used anyplace we refer to semi-gloss black or chassis black)
Dupli-Color Hi-Temp Engine Black-code# DE 1613 (For Block and Heads)
Dupli-Color Red-Orange code#DE-1605 for valve covers and air breathers on 170 & 200 cubic inch.(until June 1st 65) and the 63 260 V8 (sprint has chrome)
Dupli-Color Blue code#DE1606 for valve covers and air breathers on all 144 cubic inch, the 64 260 V-8 (sprint has chrome), the 65 170 &200 after June 1st 65, and "ALL" blocks, valve covers, and air breathers 66-70."
Hope this clears things up.
