The 1966 Rochester center carb actually has a smaller carb venturi vs the 64-65 center carbs. But the center carb airhorn is the same size as the rear carbs so all the same air cleaners. Never really saw any real data that said a 66 center carb was better vs a 64-65 center carb. Now with Holley "500 cfm" Carbs #4412 they have a 1-3/8" venturi.
The Mopar mechanical secondary carbs #4783 carbs have a much larger venturi.
One of the good guys on Tri-Power stuff is Dick Boneske.
Do a search on his name and you will find lots of tri-power information.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
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Last edited by Tom Vaught; 12-10-2021 at 03:10 PM.
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