Big Block GX and Clone Crankshaft - 69mm Stroke

Forged steel 69mm stroke crankshaft for big block Honda GX and clone engines. Can be used to add displacement to Honda GX390, Predator 420, Duromax 440, and other GX clone engines. Great for converting 460 clone generator engines into standard 1" PTO engines so that race clutches and torque converters like the Comet 780 series. 

Rod journal diameter: 1.416"/35.966mm

Displacement:

• 90mm bore = 439cc
• 92mm bore = 459cc
• 94mm bore = 479cc