What's the difference between the crank and rest of the bottom end on a 305 and 350. According to the specs they look the same. (Same journals, same stroke, etc...) I'm use to 350's but am doing a little playing around with a 305 to see what kind of torque I can get. I got a free rebuild kit for 30 over, but am trying to get some real numbers on the bottom end. Oh, and why the price difference in the rebuild kits. I didn't have to pay for mine, but noticed someone mentioned the difference in price. The 350 kits I have bought in the past have been $150, but when I looked up 305's this week, the cheapest one I could find was $230. If there's not much difference why the pricees. An inline 6 kit was even higher! And that has fewer parts.