How many different Ford engine sizes are there?

Ford 2000 cc (= 2.0 litre)
Ford 3.0 litre
Ford 4.0 litre
Ford 250 CID 4.10 litre 4.1 litre
Ford 289 CID 4.74 litre N/A (not marketed in SI)
Ford 300 CID 4.92 litre 4.9 litre
Ford,302 CID (302 Windsor, 302 Cleveland, Chevrolet 302) 4.95 litre 5.0 litre
Ford 351 CID (Cleveland or Windsor) 5.75 litre 5.8 litre
Ford 390 CID 6.39 litre
Ford 427 CID 7.00 litre 7.0 litre
Ford 428 CID 7.01 kitre 7.0 litre
Ford 429 CID 7.03 litre 7.0 litre
Ford 460 CID 7.54 litre 7.5 litre

These do not include diesel models