Quote:
(I do not have the air cleaners, second carb, etc)
You don't need a "second" carb. You need TWO carbs - both front and rear, specific to the Caribbean, and for the correct year/displacement.
To get an idea of all the differences (not only front/rear, but 55/56 and single/dual), download the
1955-56 Packard Rochester 4GC Service Information that I provided for the
PackardInfo archive and run through the included part number reference charts, as well as the basic specifications.
The only other car I know of that used dual 4GCs in this period was Cadillac, but I don't have any details.
Some have suggested reworking other models of 4GC to "fit", provided you can find the necessary parts
(which is a whole 'nuther matter) or adapting a set of dual Carter WCFBs as used on 56-57 Chevies, 56-61 Corvettes, and 55-58 Chrysler products.
Yet, the devil is always in the details -
that is, finding all the necessary components, putting them all together, and getting it to work.
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