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#1408105 04/30/2021 10:09 PM
Joined: Dec 2020
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L
'Bolter
'Bolter
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I looked at the Rochester carb that was on my 235 today. It was very clean inside and all I need are a few gaskets and accelerator pump. How do I identify the carb? It looks like the other post that buoymaker posted a picture of.
Is it the 7003536 -C-14 number that is on the bottom of the bowl? When looking at carb kits they are not very accurate in the pictures of the parts. The accelerator pump on my carb has a round shaft not flat like they sometimes show in the pictures. It has a automatic choke that was not complete, the bimetal spring was missing. The exhaust manifold has a shield that would of had a heat tube originally. But that is not there. It has a manual choke now. This engine is a 59 truck 235 by serial number.

Last edited by lumbersawyer; 04/30/2021 10:12 PM.

1947 3600 Chevy
Joined: Feb 2019
Posts: 4,476
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The carbs originally came with a tag attached to one of the screws that fasten the top cover on. Many of these tags were lost during a rebuild. On some (not all) of the carbs, they stamped the last 4 or 5 digit number on the base where it attaches to the manifold. Add 700 to the beginning of a 4 digit number or 70 for a five digit number. In my case it would be 7005921. Hope this helps!
Attachments
2D6B02E4-F958-49E3-B472-8A3B3792B7B6.jpeg (169.62 KB, 121 downloads)

Last edited by Phak1; 04/30/2021 10:47 PM.

Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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Insomniac
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Joined: Jul 2000
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That number is the bowl casting number - pretty well useless.

Carb # should be something like 7013029 or 7013953.

Last edited by Gord&Fran; 04/30/2021 10:57 PM.

Gord 🇨🇦
----
1954 1/2 ton 235 4 speed
Joined: Dec 2020
Posts: 281
L
'Bolter
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Ok, the cast base does have some numbers stamped on it. Looks to be 12127.
Attachments

Last edited by lumbersawyer; 05/01/2021 8:20 PM.

1947 3600 Chevy
Joined: Jul 2000
Posts: 2,191
Insomniac
Insomniac
Joined: Jul 2000
Posts: 2,191
From:
https://www.thecarburetorshop.com/Kchevrolet1.htm

1958 6 235 S/T Rochester BC 7012127 2639


Gord 🇨🇦
----
1954 1/2 ton 235 4 speed
Joined: Dec 2020
Posts: 281
L
'Bolter
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Thanks, I tried finding carb kits for a one barrel and got a varied search result. So a Rochester BC with standard trans. My engine serial is a truck engine and I was told the carb with a automatic choke was for a car not a truck,Thanks much.

Last edited by lumbersawyer; 05/01/2021 3:40 AM.

1947 3600 Chevy
Joined: Jul 2000
Posts: 2,191
Insomniac
Insomniac
Joined: Jul 2000
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Yes, it's listed here as a carb for a car. The number is the important thing just so you get the correct kit.
Attachments
Rochester-B-&-BC-Carburetors.pdf (155.34 KB, 19 downloads)


Gord 🇨🇦
----
1954 1/2 ton 235 4 speed
Joined: Nov 2002
Posts: 2,765
C
Carburetion specialist
Carburetion specialist
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Originally Posted by Gord&Fran
From:
https://www.thecarburetorshop.com/Kchevrolet1.htm

1958 6 235 S/T Rochester BC 7012127 2639

The "2639" in the post above is the number of the rebuilding kit.

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop

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