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Discussion Starter #1
Could you look up and see what the code is for a 4100 secondary booster without thermactor? Regular 225 hp 289 stick but if there's a listing for C4 let me know that one too. TIA.
 

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You mean the carb part number? It is C6ZF-B for a 289-4V Auto and C6ZF-A for 289-4V std.




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You mean the carb part number? It is C6ZF-B for a 289-4V Auto and C6ZF-A for 289-4V std.




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Wait, this are the 66 part numbers, sorry!


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Discussion Starter #4
You mean the carb part number? It is C6ZF-B for a 289-4V Auto and C6ZF-A for 289-4V std.




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No, not the carb number. The booster assembly is stamped with a identification lettering. In the carburator spec page. It'll tell what size jets and what booster lettering. I'm looking for the booster lettering.

For 1966 the secondary booster for a 225 hp 289 non thermactor is stamped H. I thought I read the 1965 4100 used a B booster. I have that one, I'll know it's close. Oh let me know the 1965 secondary jet size is as the booster will effect jet size.
 

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I have the shop manual on PDF. Here's a screenshot of the 4100 spec page.
 

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