I have an 87 250x and was wondering if it woud be better to overbore a 250 cylinder or just get a 300. I know the 250's rev higher, and that they just increased the stroke to get the extra displacement and call it 300. Are the cylinders the same? Also, would it be necessary to rework the bottom end?

 

Go to Powroll.com. They can help you with those questions. Get there phone # and call them.