273 vs 318

Same argument can be made with 318 and 340. Except, there is less of a difference in bore between a 318 and 340. 23 cubes difference between 318 and 340 (all bore), and 45 cubes difference between 273 and 318 (all bore).

I agree......and I can count, too. lol A 318 decked out with all the 340 goodies would spank a 340 if the 340 guy wasn't just right off the line.

Also, don't forget, with the 273, it has the lighter crank and rods. That can and will make a difference.