47-55.1 Rochester B Carb info - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jemezcrusher · 04-12-2019, 10:08 PM

I am trying to get my dual Weber carbs jetted and need to see what I can find out about Rochester B Carbs. Had one on my 235 when I took the truck apart and it ran pretty well.

It had a main jet size #58. Not sure what that means, but would need to figure that out and what the air Venturi size is of the carb. WIth that knowledge I should be able to figure out what sort of jetting equivalent my two Weber’s should have to replace the single Rochester

ANy Rochester experts on here?

04-12-2019, 10:08 PM	#1
Jemezcrusher Registered User Join Date: Nov 2015 Location: Jemez Springs, NM Posts: 435	Rochester B Carb info I am trying to get my dual Weber carbs jetted and need to see what I can find out about Rochester B Carbs. Had one on my 235 when I took the truck apart and it ran pretty well. It had a main jet size #58. Not sure what that means, but would need to figure that out and what the air Venturi size is of the carb. WIth that knowledge I should be able to figure out what sort of jetting equivalent my two Weber’s should have to replace the single Rochester ANy Rochester experts on here?

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