Back in 2011 i went to harbor freight to get a 212 and came back with a 346cc predator big block engine rated at 11.5HP @3600 and 16ftlbs @2500.I put it on a go kart and achieved 59mph governed, and it was a rocket all the way there with a clutch. This seems to be a rather uncommon engine. I dont know of any performance parts for it other than the typical stage 1 and governor delete. Does anyone else have the 346cc? Does anyone know the bore and stroke? Is the flywheel taper the same as the 301cc and the 420cc. Ive never seen any builds done with this engine either. Any information would be greatly appreciated.