Anyone using an Edelbrock 1801 Carb on their 289? - Ford Mustang Forum
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post #1 of 10 (permalink) Old 03-20-2018 Thread Starter
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Anyone using an Edelbrock 1901 Carb on their 289?

Been having trouble with my Carter 4 barrel 625 CFM carb so it's time to retire it and go another way. Wanting to go smaller to the 1801 Edelbrock which is a 500 cfm 4 barrel carb. Anyone else using this carb?
My 289 is slightly warmed over with headers , edelbrock manifold, light rv Comp cam and some minor head work and updated ignition. C4 auto as well. Car is a cruiser not a track car .

Thanks for any info provided.


Last edited by Larry H; 03-21-2018 at 05:44 PM.
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post #2 of 10 (permalink) Old 03-20-2018
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1801 is a good little carb for a 289. Nothing fancy; the CFM requirements for your engine should be spot on. That carb should be fine to somewhere north of 7k RPMs - and clearly, your build is not designed for that.

At a wild guess, you never get above 5700 RPMs with your motor - calculating in 83% volumetric efficiency says you'd need about 396 cfm for that RPM. If your engine's more efficient, or you're winding it higher, you can see there's still some cushion available. Your little carb should give you good throttle response.

As a street setup with some giddyup, it'd be perfect.


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post #3 of 10 (permalink) Old 03-21-2018 Thread Starter
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1801 is a good little carb for a 289. Nothing fancy; the CFM requirements for your engine should be spot on. That carb should be fine to somewhere north of 7k RPMs - and clearly, your build is not designed for that.

At a wild guess, you never get above 5700 RPMs with your motor - calculating in 83% volumetric efficiency says you'd need about 396 cfm for that RPM. If your engine's more efficient, or you're winding it higher, you can see there's still some cushion available. Your little Holley should give you good throttle response.

As a street setup with some giddyup, it'd be perfect.
Thanks for the response. Actually I meant to write 1901AVS2 which is the newest 500cfm carb from Edelbrock. Has something called annular flow boosters..Ordering one tomorrow as I update this car and make it a bit more reliable and pleasant to drive.

Grimbrand thanks for responding with your experience and advice.
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post #4 of 10 (permalink) Old 03-21-2018
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The Edelbrock 1901AVS2 is a nice little carburetor made by Weber.
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post #5 of 10 (permalink) Old 03-21-2018
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Quote:
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...Has something called annular flow boosters...
...which is what the factory Autolite carbs also had used since the 50s. Instead of an 'update' its more like 1957 all over again. Packard filed for a carb patent using the same 'feature' in 1919 but it wasn't issued until 1927. By the late 50s the patent had expired so that Ford, or anyone else, could use the same idea.
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post #6 of 10 (permalink) Old 03-21-2018
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Annular boosters offer a lot better mixing at low and part throttles. Smaller fuel droplets = more complete burn, better power, better efficiency. Rather simplistic, really; I don't know why so many other designs are commonly in use, except that it's probably cheaper to make them.
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post #7 of 10 (permalink) Old 03-21-2018 Thread Starter
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And that is why i use this blog.. Lot's of knowledgeable folks willing to share their knowledge with folks not so knowledgeable.
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post #8 of 10 (permalink) Old 03-22-2018
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...I don't know why so many other designs are commonly in use, except that it's probably cheaper to make them.
I think that would be the main reason.
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post #9 of 10 (permalink) Old 12-12-2019 Thread Starter
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By the way just as a follow up to this POST I have been using that Edelbrock 1901AVS2 carb for about almost 2 years year now and very happy with it. car starts every time with no issues . Good idle and good response on the street. All i could ask for in a good reliable street carb.
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Thanks for following up, Larry! Glad your 'Stang is running well. =)

I smile a lot. It makes people wonder what I'm up to...
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