If you can reduce the vibration affecting the carburetor, it will improve the fuel curve and increase horsepower.
There have been several attempts in the past to dampen these vibrations. These Second Hand Pros Carburetor
Vibration Isolators are the most effective and user-friendly parts available. Our unique design relies on a 1/4”
thick aluminum plate, which is encapsulated within the special durometer rubber base, positively isolating the
carburetor from the manifold. The aluminum retainer ring can be bolted directly to the manifold as tightly as
needed, and the carburetor can be bolted to the internal plate with the proper amount of torque, and the harmonics from the manifold will still be separated from the carburetor. They are most beneficial on sheet metal intake manifolds. The tapered throttle bores, and annular “shear” rings are molded right in to the rubber. They function
to not only increase flow, but are extremely effective in stopping reversion.