Harley Davidson Evolution Heads

This what a stock EVOLUTION combustion chamber looks like with stock sized valves.

Harley davidson evolution heads. Contrary to what many performance shops try to tell you we were able to break the 90 horsepower mark without larger valves porting and polishing the Evolution heads. R. 5 Axis CNC Cylinder Head Porting Our 5-axis CNC cylinder head porting center uses computer control to.

Contrary to popular myth serious power can be made with stock Harley-Davidson heads without reshaping the combustion chambers polishing the ports and combustion chamber using a larger intake valves or making. Head Modifications for the Discriminating Harley Enthusiast I offer a myriad of custom Harley Davidson cylinder head preparation levels each with numerous options to meet with your individual requirements. They are also called Evolution or Evo.

In 1999 it was replaced by the Harley. 100ci Nikasil big bore kit. 1983 To avoid betting the farm on Evo the shovel was kept in production for a time.

I came accross these two Evolution Heaads. We hope this explains anything we left out. This head came off an 80 CID engine that produced 101 horsepower.

- SS Cylinder Head for Harley Davidson Evolution Big Twin Engines. SS EVO ported and flowed heads Honda 65 Clone Race Kart Head. Harley-Davidson Evolution engene Disassembly and Re-assembly - YouTube.

Kawasaki Vulcan 1470CC Heads. SCREAMIN EAGLE EVOLUTION 1340 CYLINDER HEADS Built right at the factory for unparalleled quality. I prepare cylinder heads for Pan Heads Shovelheads Iron and Evolution Sportsters Evolution Big Twins and of course the newest Twin Cam motor.