Just to illustrate the difference in the 2 carbs. On my 150 stroker motor, after installing the custom cam I needed a larger carb and went with the KEIN 32mm Pumper CV carb. I had to rejet it naturally. I then took the plung and went with a Mikuni VM 32mm slide carb and the engine would not run, it was just dumping fuel. Jetting was not much help. I ended up having to change out the needle jet and jet needle as well as the throttle valve. Once I had this correct I then was able to jet it to where it run like a raped ape but at top end it was leaning out to the point the plug was white with metallic speckles which was from the piston melting. I than had to run a larger needle and seat for more fuel to the bowl. Keep in mind these were both 32mm carbs. Slide carbs are superior to the cv carbs but the same mm slide carb will fit more applications than a cv carb. Once you get them tuned you will never go back to the cv carb.
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