I have a 71T with a 2.2T motor with E cams and pistons running Zenith carbs. I haven't had a chance to drive it yet as it's not quite done. So of course I'm already thinking of more power.
A friend has made the offer of a 2.7 core for dirt cheap that I'm thinking of using as a starting point to build a motor with a little more go power than the 2.2. I would build this while driving the 71 and swap motors when I got it done.
With the 2.7 as a base, what's the most economical build to end up with something around that 180 hp mark. I'd like to keep the Zeniths if I can make them run well. Can a 2.45 be built on the 7R case or are the spigots too big? How would a 2.5 short stroke with a 66mm crank compare to the 2.45 above?