It would be the lighter ford blue if it was a blue at all. The darker didn't come out until the mid or late 70's. There is also a ford red and green that may have been used. You will find the original color somewhere around the mounts if not under them or on the back of the block.
Mark J. Covill
"I'm not handicapped, I'm handicapable!"
'64 F-100 Shortbed 460/C-6
Author of the disc brake article for 57-64 F-100's
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