Harley Davidson Evolution Vs Twin Cam

2000 Harley Twin Cam A Touring Mikuni Carb Custom Air Cleaner 14k miles BlackChrome 1995.

Harley davidson evolution vs twin cam. Harley Davidson 5-Speed Transmission EVO BlackChrome 1999 9k miles Softail 999. I am looking for a drop in cam without needing to alter the valve springs. There are some clear differences between the engines.

Harley-Davidson Twin Cam 88 and EVOLUTION engines. The New Milwaukee Eight Harley Davidson Engine Vs. The Twin Cam was designed to make factory assembly easier and of course cheaper at the cost of most of it being disposable rather than rebuildable.

80 vs 96 103 110 Cases is stronger especially regarding cylinder studs and in the casting where the inner cam bearings sit where the Evo cracks. The Evolution Evo engine is a V-twin engine that has been manufactured and used by Harley-Davidson since 1984 for a variety of different Harley motorcycle models. This engine is not to be confused with the Sportster Evo same name different engine Twin Cam 1999-present There are 88-ci 96-ci 103-ci and 110-ci versions.

The obvious thing is they are both manufactured by Harley Davidson. The new design runs so cool Harleys engineers were able to crank compression as high as 1051. Essentially the Evo engine has a much more efficient combustion chamber and head design and can produce more horsepower and torque than the TC 88 for a given cylinder volume.

The Rumble Stick has more lift than the Andrews EV27 or the EV46. Add that to an 8-valve engine with a 55mm throttle body flowing 50 more air than the Twin Cam and they were able to crank a lot more power out of the new engine. It is mostly a Shovel with aluminum cylinders and a better combustion chamber.

Design and development problems. I figure with this lift and the shorter duration on the intake it should make good power and torque in the lower and mid range. Perhaps we should first know what these units have in common.