According to the EPA’s data, Harley-Davidson will introduce a new 1746cc (107ci) engine with a larger 1868cc (114ci) engine for CVO models. The new engine will be used on the: CVO Street Glide, CVO Ultra Limited, Electra Glide Ultra Limited Low, Road Glide Ultra, Ultra Limited, Ultra Limited Shrine Edition and the Tri Glide Ultra and Free Wheeler trikes.

http://www.motorcycle.com/manufactur...ht-engine.html

The EPA data has the 1746cc engine producing 92.5 hp at 5000 rpm, compared to the previous 1688cc Twin Cam’s EPA-rated 80.5 hp at 4000 rpm. Meanwhile the CVO models’ 1868cc engine is EPA-rated at 100.6 hp at 5000 rpm, a significant increase over the current 1802cc engine’s 87.2 hp at 4000 rpm.
Early speculation about the “Milwaukee-Eight” name assumed the number refers to the number of valves (as in four per cylinder). The EPA data however rubbishes this theory, confirming that the new engines will continue to use two valves per cylinder. (UPDATE: with the official announcement, Harley-Davidson confirms the engine uses four valves per cylinder, contradicting the information in the EPA’s certification documents. We’re going to take the manufacturer’s word on this one over the government agency and assume the EPA’s info is either outdated or an error.)