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After many years of being unobtainable, the Koslow heads are back. These monster cylinders would make nearly any big twin engine of their day the fastest at the track. There is no replacement for displacement, and when paired with your chosen set of flywheels offer between 90-110 cubic inches of fir
I found this stunner on the Cheetah website, after mentioning him in the El Rollo megapost. It was built in 2016 and is, I think, a very rare 1930s Excelsior Super-X with a 1930s Koslow overhead valve conversion. Koslow OHV heads were usually fitted to Harley bottom ends. This is what the Cyril Huze blog says about Koslow... 'When in 1931 Ignaz Schwinn, the owner of Excelsior/Henderson Motorcycle Company in Chicago, decided to shut down the business, one of his engineers named Andrew Koslow, an
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