Re: Rochester 4GC carb

Posted by Craig Hendrickson On 2011/8/24 9:38:35
Quote:
And a size chart:

Model /CFM Venturi Diameter/ Bore Diameter

primary secondary / primary secondary


4Jet/486,1-1/8,1-1/4/1-7/16,1-7/16

4Jet/553,1-1/8,1-15/32/1-7/16,1-11/16

4Jet/692,1-1/8,1-15/32/1-9/16,1-11/16


To further muddy the water, the Packard Service Manual in the "Specifications - Fuel System" for 5560 & 5580 lists:

4GC/CFM?,1-1/16,1/1-5/16,1-5/16

In a document I have from "Texas Region, Packards Intl" for the the 5588 2x4:

4GC/CFM?/1-1/64,57/64/1-5/16,1-5/16

I have in my notes (but no source ref) that the 5680 is:

4GC/CFM?/1-1/4,1-1/4,/?,?


Craig

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