Thats what I have on mine. You might get away with a slightly bigger cam that what I'm running, but 230 is to big for a stock bore 305. Corse thats just my opion and others more knowledgeble might have different ideas. Those 305 are pretty good motors and if you can match everything up for that motor and not use to much, you've got yourself a solid little runner. I'm running 304HP and 313 lbs. of torque and thats after running 3 different carbs, intakes, cams, etc. I finally found the performer intake and 600 cfm cam worked best with my cam. I'd run alot better if I had better heads, but I just ported my stock heads and they worked fine. Good luck with your build!