Originally Posted by neduro
I just wonder if a motor engineered from the ground up for 654+, can be made to work worth a darn at 450ccs. There's so much that goes into engineering not only the engine, but airbox volume, exhaust, ports, cams, etc... I have no idea what to expect from the finished product on the dyno.
If nothing else, changing the piston, rod, and stroke should be a way to make the 690 vibrate like a proper LC4! :)