Last comment for the night.
Mike Urich, in one of his books mentions the effect of having the throttle blades close to the roof of a Intake Manifold Plenum vs having some "distance" from the Carb Base/Throttle Blades to the Pluenum.
Holley Carb Engineering testing on Engine Dynos showed a definite benefit in fuel distribution in the intake manifold by adding a 1-1/2" to 2" Spacer between the carb and plenum when using a dual plane intake. (The lower level plenum ALWAYS had better fuel distribution in the intake runners vs the upper level plenum without any spacer.)
The fuel distribution was basically equal on both upper and lower plenum after the 4 hole spacer was installed.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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