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Jul 21st, 2025 | | | | Joined: Jun 2011 Posts: 124 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 124 | So I ended up getting a NOS Rochester 230 Auto Choke Carb with the tag recently on ebay. According to the number on the tag it is for a 1964 230 passenger car. I'm now debating if I should use it. Were the auto choke carbs of that era reliable? The way the throttle and choke move seems funky but I'm sure vacuum has to do with it. I'm thinking after that many years even though it's NOS I'm going to have to rebuild it anyway.
Any thoughts on this carb? | | | | | Joined: Jul 2008 Posts: 1,262 Shop Shark | | Shop Shark Joined: Jul 2008 Posts: 1,262 | FWIW.... I had a 1970 Nova with a 230 and an auto choke. I liked it a lot better after I put a manual choke on it. | | | | | Joined: Jun 2011 Posts: 124 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 124 | FWIW.... I had a 1970 Nova with a 230 and an auto choke. I liked it a lot better after I put a manual choke on it. How hard is it to convert to manual choke? Seems pretty simple just remove the auto choke vacuum parts. Then I suppose you must weld on the manual choke pivot point? | | | | | Joined: Jul 2008 Posts: 1,262 Shop Shark | | Shop Shark Joined: Jul 2008 Posts: 1,262 | On my '70 Nova the manual choke was a bolt on affair. I did it myself, and I was 16 or 17 years old at the time. John  | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Automatic chokes are smarter than all drivers and most mechanics, just like automatic transmissions. Why take a huge leap backwards in technology?
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Jun 2011 Posts: 124 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 124 | Automatic chokes are smarter than all drivers and most mechanics, just like automatic transmissions. Why take a huge leap backwards in technology?
Jerry In reality I'm probably going to bolt it on this weekend and see what it does. I'm curious since it is a NOS carb it might just run alright. If not I will do what I need to in order to get it to run right even if I install new gaskets on it and or rebuild it. I really hate to mess with it too much being NOS unless I need to. I will see what it does. I hope I can make it work since I know for a fact it is a 230 carb since it still has the tag and all. Original box too.
Last edited by krazymatt; 02/13/2015 10:39 PM.
| | | | | Joined: Jun 2011 Posts: 124 Shop Shark | | Shop Shark Joined: Jun 2011 Posts: 124 | What I noticed on the base is a threaded hole with what appears to be a small flathead screw in there. Is this a vacuum port like for power brakes? I'm assuming I need to plug it. | | |
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