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Mod | | | Forums66 Topics128,022 Posts1,055,384 Members48,422 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Apr 2011 Posts: 523 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 523 | I have a minor problem with my carb, maybe only a link that came loose. BUT, in looking through some posts on the forum, I had some questions regarding the fir of the carb to my engine. I got my engine and carb as a package from a local shop, used, but had reason to believe that it was in good shape. I am having some reason to question that now, but that is another story.
The engine is a 1955 235 from an unknown application. I have it in a 46 truck with a 4 speed tranny (that is the way it came to me). The carb is a Rochester 1 bbl series B carb. It has an automatic choke. From what I have read, it sounds like that came from a passenger car. Is that correct? Do I have any issues? Is there a way to convert to manual choke (I am partial to manual). And is there a way to add the manual throttle (dash control).
Bob
BobS46
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | That would be a Rochester BC carburetor (model B with automatic choke, C).
BC carburetors we used on some trucks from 1954 onwards, any maybe on earlier car 235s.
Does it have a post for the air cleaner, or, does the air cleaner clamp to the top/throat of the carburetor? | | | | | Joined: Apr 2011 Posts: 523 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 523 | Thanks for the reply.
The air cleaner clamps on to the top of the carb. I am currently using the oil bath cleaner that came on the original truck.
Bob
BobS46
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Bob,
What is the Engine Serial Number that should be pressed/stamped into the block on a ledge to the rear of the distributor? | | | | | Joined: Apr 2011 Posts: 523 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 523 | 0161195 F55Z
the first number has the "1" digit indicated as roman numeral "I", but I suspect that they are "1".
BobS46
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Yes you can convert with one of these kits....or a DIY method using a remote throttle/choke cable from any FLAPS .
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn | | | | | Joined: Apr 2011 Posts: 523 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 523 |
BobS46
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | Be careful - different kits require the cable to be pushed or pulled. When in place important that position 1 (hot) is completely open, and position 2 (cold) is restricted by a clamp or sleeve to give you some idea of where you are when starting the engine. The choke pull-off for a manual transmission (what you should open the choke to immediately the engine starts) is something like 5/32" from completely closed (from the service manual setting for "automatic choke vacuum break"), which is what I mark the cable to. | | |
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