I thought I had this all figured out but maybe I never encountered the 4350 or forgot.
What is the difference between the 4350 and the others?
I've had probably a hundred 4300s over the years and:
I know the 4300 is a near-square bore:
441cfm:
Primary venturi 1"
Secondary venturi n/a, 2-flap air valve
Primary throttle 1-7/16"
Secondary throttle 1-9/16"
600cfm:
Primary venturi 1-1/4"
Secondary venturi n/a, 2-flap air valve
Primary throttle 1-9/16"
Secondary throttle 1-11/16"
Both of these fit nicely on a Auto 4100 or Holley intake.
The 4300D first used on the Boss 351 is a spreadbore:
715cfm-760cfm depending on who you believe:
Primary venturi 1-1/4"
Secondary venturi n/a, 1-big-flap air valve
Primary throttle 1-9/16"
Secondary throttle 2"
What is the 4350? (1975-1978 or so)
Is it a near clone of the 4300 or a near clone of the 4300D?
Venturi/Throttle dims?
Is it just a 4300D but with a different name after 1971?
Does it flow the same as a 4300D or less?
Or is it just a renamed smog-tuned 4300?
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HAVE A NICE DAY!!!!