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Jul 21st, 2025 | | | | Joined: Jan 2014 Posts: 74 Shop Shark | | Shop Shark Joined: Jan 2014 Posts: 74 | I need to rebuild the modelB rochester carb on my truck it has a 1962 -235 six with hydralic lifters. The B tends to get damp after a good trip on the bowl and if you wipe it with a rag you do smell gas .It has the2-15/16 inch base . I have a 1967manual choke carb ROCHESTER (292) nos in a box that has the same base and the choke cable will hook right up and the gas pedal attachment will also. Before i try this out is there any pros or cons youse guys would like to share with me or should i just rebuild the B. thanks for any feedback on this BJF
Last edited by BJF52; 10/23/2014 9:58 PM.
| | | | | Joined: Nov 2002 Posts: 2,715 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,715 | Given the two choices with you have listed, I would suggest rebuilding the "B" for the following reasons:
(1) The 292 carb is internally larger, which would add more power at the upper RPM ranges, and SUBTRACT it from the lower RPM ranges.
(2) The gaskets/accelerator pump/fuel valve used in the N.O.S. 1967 carburetor are NOT compatible with modern fuel, either ethanol-based or real fuel because of modern additives. It will require rebuilding before use.
(3) There is always someone who doesn't understand number (2) above that is willing to pay big money for N.O.S., especially a 292 carb.
I would suggest a third possible option of looking for an appropriate Carter on Ebay.
Jon.
Good carburetion is fuelish hot airThe 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 | | | | | Joined: Jan 2014 Posts: 74 Shop Shark | | Shop Shark Joined: Jan 2014 Posts: 74 | THANK YOU --- I WILL look for a BETTER B or CARTER. THE truck is geared so low more power is not a good thing, top speed is 45 MPH.Since i have had the 292 carb since about 1969 and it cost new $45.00 with core do you know the cost of a up dated kit for it. thank again BJF | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | I would suggest a third possible option of looking for an appropriate Carter on Ebay. My thoughts exactly. Word of caution, there is a Ford version of the Carter that is jetted differently from the Chevrolet, and is even a bit different internally. I have seen those carbs mistakenly sold as "Chevrolet" carbs. That one will make it run very rich.
Bill Burmeister
| | | | | Joined: Nov 2002 Posts: 2,715 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,715 | THANK YOU --- I WILL look for a BETTER B or CARTER. THE truck is geared so low more power is not a good thing, top speed is 45 MPH.Since i have had the 292 carb since about 1969 and it cost new $45.00 with core do you know the cost of a up dated kit for it. thank again BJF Since the carb is N.O.S., you would not need the more expensive major kit that we make with all of the extra parts. Try one of the better FLAPS. Napa kits are decent for what they are, as are Walker. I do not know the cost of either. Jon.
Good carburetion is fuelish hot airThe 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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