IIRC it is possible if you resleve the cylinder block. There is a guy on the SOHC board who is building a cb550 with 750 pistons and a host of other cool tricks like the cb650 head and such.
The cb650 engine bolts in to the 500/550 frame (none of the internals are readily interchangible however). CB650s are cheap and if you have to do motor work might as well find a running cb650 and use that engine instead.
The cb650 engine bolts in to the 500/550 frame (none of the internals are readily interchangible however). CB650s are cheap and if you have to do motor work might as well find a running cb650 and use that engine instead.
