The Stovebolt Site Forums The Shop Area Engine Shop Carter YF 6202S carb

I came across a Carter YF6202s carb which I understand is from an AMC 232/258 engine. Tag also has F 2 B on it. Is there a way that I can determine which size engine this actually came off of? Trying to come up with a carb closer in size for my 261 which is bored .030. Now running a YF 3211s from a 235 which runs good but maybe too small.

From Jon's (carbking) website:
https://www.thecarburetorshop.com/Kamc2.htm
1972 6 cylinder 232 A/T Gremlin, Hornet Carter YF 6202S

Good for a 235 but too small for a 261.

The YF 6199S manual choke and 6200S automatic choke was used on a 258 in 1972.

Jon also posted these carburetors, which are used on the next generation engines, but could be suitable for 261.
https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Number/81523
These are not direct bolt-on and use. For example, some have throttles that open in when the throttle arm is lowered and some when raised.
Some have the vacuum for the distributor below the throttle valve and a few above.
Some are made for California emissions. Basically you have to go through each carburetor's attributes for optimum.

Another option is to look for Ford 240 and 300 YF's but the ones I have seen like the YF4499S has an aluminum throttle base which turn to aluminum oxide (sandpaper) and corrodes the throttle shaft.

There is an on-going discussion that the Holley 390 and Carter AFB 9400S (not Edelbrock or Weber) 4bbl. would be the limit for a 261 with modification.

I believe I'd look at a Zenith 28 or 228 for the GMC 270. The 3211S is an auto-choke (which I think is by far the best carburetor for use on the later 235s). The Zeniths are manual choke.

Yes, Zenith would be the ultimate best option but the correct one you need is hard to find.

Another option I forgot to mention is the Carter WA1 710S (M/T) and 764S (M/T) which were made for the 1949-50 Oldsmobile flathead 6 257.
I plan to test this one myself. The negative is that it has a automatic choke.

Thanks for the info. I do also have a Carter from a Ford 240 but didn't think it would be any better than the 3211s from a 235 which I'm already using.

I just dug out the one that I believe to be from a Ford 240. Could you confirm that. #YF6051s Autolite D1TF-JA A O G 15

Same website:
https://www.thecarburetorshop.com/Kford.htm

YF6051S 1971 Maverick 200 6 cylinder A/T. You're getting colder.

I'm currently running the Y2100S. It's very good but lacks the last little bit of go on the top end.
Our 261s are not good breathers on the top end so it can be hard to tell the difference without an on-off carburetor comparison.

well I guess that's not going to help me either. Thanks

Those links to applications on the carburetor shop are very useful. I'm unable to find them myself on their website. Could you post the link to GM applications. Thanks much appreciated

No, no, no, no. You don't learn if you have others to do it for you. Big grin.

Jon spent a great deal of time and money making his website.
It is packed full of information to those who will take the time to search.
GM (General Motors) made a lot of automobiles.
Chevrolet, Buick, Oldsmobile, Corvette, and on and on.
You need to be more specific, let's say Chevrolet.
Now we need to know if it is for a car or truck.
Let's do truck.

Main page:
https://www.thecarburetorshop.com

Find and select (click on) truck kits:
https://www.thecarburetorshop.com/Truckkits.htm

Scroll down and select Chevrolet:
https://www.thecarburetorshop.com/TruckkitsC.htm#TkitChev

From 1918 to 1980. A lot of trucks. If you scroll down too far it goes into another category.
Scroll back to the Chevrolet section.

If I want to search that massive list, I only have to use a few numbers.
For a YF4375S, I only use "4375".
Now press and hold the "Ctrl" key and at the same time press the "F" key.
It's called the find function.
At the top of your screen it will say "Find in page".
Type in 4375 in the box.
The screen below changes as you type.
Neat isn't it?

Advanced users use a shortcut on the address field of their respective browser.
Simply type in:
thecarburetorshop.com 4375
.

There is WAY to much information on my site (currently about 6000 pages) to index it, you use Goooooooogle (or your favorite search engine).

Use the search string thecarburetorshop.com "carburetor number"

So in this case the string would be thecarburetorshop.com 6051

This will take you to a page (sometimes more than one as there will be other carbs than YF with number 6051).

Now, depending on your browser, you should have a tool called something like "find on this page".

So click the tool and enter the search string 6051

This will take you to the correct spot on the page, and highlight the 6051.

Pretty much every O.E. carburetor from 1915 to 1974 is listed.

EDIT: Yes, I know how to spell the funny word in the first sentence, but when I typed it correctly, this website converted it to "duckduckgo". I guess I got censored!

Jon

Great clarification. Got it figured out without the use of my grandkids. Your comment about advanced users does not apply here. It is an awesome sight. Thanks so much