In the 1970s and early '80s there were some 45s which were lower pitched than the album versions. I wonder if this was done to counteract the trend of radio stations pitching up their music?
Examples:
Allman Brothers Band - "Ramblin' Man"
Bertie Higgins - "Key Largo"
Bob Seger - "We've Got Tonite"
Lobo - "I'd Love You to Want Me"
Paul Davis - "I Go Crazy"
Stephen Stills - "Love The One You're With"
The original 45s of these play slower than what you hear on CDs/digital downloads today.
Of course, there were also some 45s which played faster than the album versions, most notably the Doors' "Light My Fire", Gerry Rafferty's two big hits, and the original edited 45 of "Margaritaville".