Originally Posted by Longhunter_1
I had a three cylinder Kawasaki 500 in 1969. It was the fastest street bike on the market at the time. 0 to 60 in so many seconds (cant remember how many) It was like being strapped to a rocket. shocked It's a wonder I lived through that period. crazy

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The infamous Kawasaki H1 triple, the widowmaker. 384# with 60 hp. While the power pales in comparison to a current 600cc four stroke that weighs 410# and puts out 110+hp, the real issue with the late 60's and 70's vintage bikes is the chassis, tires and brakes were woefully inadequate.

I would take a swag that provided the bottom end and transmission can handle it, proper development with tuned pipes, porting, reeds, carbs and head work could bump the H1 triple in the 90hp neighborhood. Insane in the original bike, downright sporting in a modern chassis.

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(and yes this is an H2 750 triple)