I replaced the Rochester on my '53 Powerglide engine with a Carter YF 2100S. My gas mileage went from 14-15 to 19-20. And the acceleration and power are better. I was fortunate to find an unmolested and never rebuilt unit, and although it was rusty and stuck, with patience and the right rebuild kit from The Carb King, It runs perfectly. Can't say enough about it.
Kurt
