Big Twin(Stock) Engine Sizes:
Flathead 45ci (742cc)
Knucklehead 60ci (990cc) & 74ci (1208cc)
Panhead 60ci (990cc) & 74ci (1208cc)
Shovelhead 74ci (1208cc) & 82ci (1340cc)
Evolution 82ci (1340cc)
Twincam 88ci (1450cc) & 95ci (1550cc) (88/96ci bore 3.75in (95.25mm) & 4.00in stroke on 88ci (101.6 mm)
Twincam 96ci (1584cc) & 103ci (1690cc)(88/96ci bore 3.75in (95.25mm) & 4.38in stroke on 96ci (111.25 mm)
2017-Milwaukee-Eight 107ci (1746cc) & 114ci (1868cc)
References
Hornsby, Andy. "A Potted History of Harley-Davidson: Part 1 1903-1954". American V. Crewe, UK: American-V. Retrieved 2011-04-04.
Mitchell, D., ed. (1997). Harley-Davidson Chronicle - An American Original. Publications International Limited. ISBN 0-7853-2514-X.
Henshaw, Peter, Kerr, Ian, "The Encyclopedia of the Harley-Davidson", 2001, Chartwell Books, Inc., ISBN 0-7858-1274-1
