[wilkin250r]

I would agree and disagree with Desert. I think the 600cfm is a little small, but I don't think it's a deal-breaker. By the same calculations in the article of CFM=(displacementxRPM)/3456, but solving for RPM instead of CFM, you'll get 5200rpm. I think you're still okay, just not ideal.

Now, I've rebuilt a couple Edelbrock carbs, but I'm not a master tuner. However, I AM a master tuner on motorcycle carbs, and in my experience, smaller carbs are easier to tune. The increased intake velocity means all your venturis get plenty of vacuum, plenty of airflow, everything works exactly like it's supposed to and it's much easier to dial in. Big carbs equal big peak HP numbers, smaller carbs have better mid-range and economy.