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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2010 Posts: 1,660 Curmudgeon | | Curmudgeon Joined: Mar 2010 Posts: 1,660 | The earlier trucks with a 216 engine had carburetors that had a 2-1/2" (c-to-c) mounting-stud distance on the manifold.
Later trucks with the 235 engine had carburetors with mounting stud distance of 2-3/4".
In general, it's not smart to swap carburetor parts unless they both are the same ID number.
A 216 throttle body on a 235 fuel bowl may create an air flow turbulence at their junction.
"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
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