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Discussion Starter #1
I bought a "new" rebuilt carb and upon comparing it with the existing one I found some differences.

The stampings on my existing carb (which I bought rebuilt in '87) are as follows:
1.23
C4MF U
52363 (stamped underneath)

The recently bought rebuilt carb says:
1.14
C5ZF B
964 (stamped underneath)

From what I know, the C4 is for '64 and C5 is for '65. Also, the venturi size is larger on the C4.
Can anybody decode the remainder of the stampings? Because of the larger venturi's on the C4, I
am thinking it may be better to keep it and rebuild it. Will it make that much difference performance wise?
 
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