Big Block CIDs

CID   Years      Bore   Stroke   VIN       Color
400   '65 - '67  4.000  3.980              Bronze
400   '68 - '69  3.870  4.250     H[,V]    Bronze
425   '65 - '67  4.126  3.975     O[,P,R]  Red; Toronado is Blue
455   '68 - '72  4.126  4.250     W        Red; Toronado & 1970+ is metallic Blue
455   '72 - '76  4.126  4.250     U        metallic Blue
High compression 425s and early 455s were painted red and the air clearners were an orange/red, definately a different shade from the engine. Low compression 425s had black air cleaners.
Check "Block" and "Head" sections for more information.
[ Thanks to Chris Witt, Mat Nadrofsky for this information ]