Atomarc - (3) BXVD-3's are probably a wee bit much for the 235 (unless you redline around 12,000 RPM); but three properly chosen and calibrated 1-barrel carbs CAN get both better power AND better economy than a perfect single carb (let alone the Rochester B).

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop