Join Date: Sep 1999
Location: Vancouver, WA, near Portland, OR
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Re: rochester 4jet
According to the two Rochester books I have, it's a model 4G, Rochester's first 4 bbl carb. Used from '52-'67. It's a square-bore design with dual side-hung floats. If you're looking for the best carb for off-road, you need to update to a Quadrajet, which is also known as model 4M. It is a spread-bore design with a single center-hung float. I'm running the Edelbrock Q-Jet #1904 on both my Jeeps with great results. The only thing better than a Q-Jet is fuel injection.
'66 Jeepster Commando w/Buick 252/4.1L V-6
'70 Wagoneer w/Buick 350 V-8
'76 Wagoneer w/AMC 401 V-8 (sold)