[A-Snake]

Originally Posted by Cobra #3170

Early cars did not have dual fans just a single mounted in the center of the radiator
not sure when they added second fan but believe it might have been when the dual tail lights came along

The change to dual tail lights was at the beginning of the 32xx series, but no specific change to dual fans.
The vast majority of all 427 Cobras received single fans. Twin fans were only fitted where circumstances deemed necessary.