Goliath, our lumbering 1966 Chevy C50 project truck, is equipped with a 292ci straight six engine. That workaday mill is not exactly what you’d call a performance piece in stock condition. That being said, it still cranks out nearly 300 ft/lbs and it moves the big truck along pretty well. Ever since we got the truck we knew that the carb had issues. It stumbled badly, generally ran bad, had no fast idle when the choke was applied, and frequently “sneezed” through the carb when cold. It was time for a rebuild of the not-so-mighty Rochester B 1-barrel carb. It’s no Dominator, but this little piece is a pretty cool fuel mixer.
From what we have read, this carb moves about 250-275 cfm, plenty to feed the stock 292. In the future we’d like to go all retro-cool and add another 1bbl on a neat manifold, but for the time being, this single carb will get the job done.
We’ve got a gallery of about fifty photos documenting every step of rebuilding this simple carb. In all honesty, after completing this first one, we think we could do the next one in less than 15 minutes on the clock, but since rebuilding carbs is kind of a relaxing zen type of deal we’ll take our time.
We’re going to take you step by step through the whole carb in the detail that only the internet allows. No editor in his right mind would try to shove a fifty photo package rebuilding a one barrel carb into a magazine.
LINK: Rebuilding Goliath’s Rochester B Carburetor
I am missing the linkage on a 1981 rochester four barrel so I made one up based on pics, When I increase the RPMs the vacumn break is not moving as the vacumn dcreases. Am I missing something.