Swapping the throttle body would probably be a mistake, unless everything aligns properly above it- - - - -venturi size, idle and vacuum passages, etc. I believe the small-diameter carbs were designed to run on the 216 engines, not the 235's. If you do manage to get the small carb to bolt on, it will run pretty rich due to higher venturi velocity for any particular RPM you're running. It might also restrict full-throttle RPM, but it's not likely you'll be doing much wide-open running unless you're pulling a heavy load in a lower gear.
Jerry

Edit: The small-venturi carb might have been intended to be a quasi-governor on the 270 to prevent over-revving in the lower gears. The 401 V-6 in my fire truck has a tiny Stromberg 2-barrel, probably for the same reason.
Jerry



Last edited by Hotrod Lincoln; 10/24/2009 5:07 PM.
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