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| | | Forums66 Topics128,050 Posts1,055,684 Members48,426 | | 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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jul 2006 Posts: 22 New Guy | | New Guy Joined: Jul 2006 Posts: 22 | In a std carb kit for a 235 engine, Rochester B, there are two air horn gaskets. The carb rebuikd kit illustration, shows the one to use is the one that has sort of a small dog leg cut-out at the end opposite the needle-valve seat assy. Where is the other one used. Possibly a BC? Then I've researched the Old Car Manual Rochester parts list, and I find the p/n for that gasket is 7004480 for just about all 50's carb B's. I don't understand. Can anyone chime in and help me out here? Thanks.
Pizza40
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Carb kit's usually contain more then one gasket for certain positions so they can cover more models with thesame part number. Match the gaskets to the old ones & disregard the extra's. They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | ChevGene posted the correct answer on the vcca site. The gasket with the bigger hole is for the early low top model b. The gasket with the smaller hole is for the later high top model b. | | | | | Joined: Jul 2006 Posts: 22 New Guy | | New Guy Joined: Jul 2006 Posts: 22 | Thanks everyone for the help. I just don't understand why these kit makers just don't come out and tell you these things. Seems like such a simple thing to do.
Pizza40
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