[bremillard]

Let me rephrase. There are a lot of things you can do more easily and cheaply to make more power than changing rod ratio- where if there is any gain at all it is marginal. You must also change cam size,timing.ect to see any gains. Longer rods are heavier rods which is also very important if your crank is marginal. You limit your ability to "stroke" the motor for more cubes (you will gain significant torque and h.p. from stroking) before piston pin is too high up on piston(and ring pack).-Bob