1964 - 1974 Factory Engine Paint Chart

Jadaharabi said
My 72 & 73 both had blue motors. The 72 was almost a ford blue. The 73 was chryler blue.

I can believe that. I have seen that as well. I do remember a color change where they added an "AB" to the end of the part number. Don't think they were ever mixed the same way twice!