Hey everyone who's reading (And thanks, for answering my call for help )
Name's Shawn I'm 19 years young, and over summer I bought a 72 Valiant with a 225 Slant and an automatic. Apparently 71,000 original miles

I've been researching a lot about these cars and these motors obviously since i got the car, but I have a few concerns with the carb that's on mine and just the optional carbs in general that are available.

My car came with a 1920 from the factory. I have a 1920 on it currently, and it runs okay (clearly very rich, bad gas mileage too) but once in a while when she wants to she will dump fuel out of the float bowl all over my intake and exhaust manifolds. I really don't want this car to go up in flames before I get to really get some miles on it. Also don't want to get stranded somewhere.

I can't find the correct float anywhere for the carb, from everything I've seen and read there is a scarce amount of these floats left on Mike's Carb website, but they are not the right one for my model # (6260)

Tried to order the correct one from walker...waiting for a refund because they have no more. I don't want to "just settle" for something that "fits". If someone can point me in the right direction to a different single barrel (Carter BBS or 1945) and what else i will need to make either of those carbs work as close to factory spec as possible, or could sell me a full Super Six setup, it would be greatly greatly appreciated. Thanks!

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

Not a super six but a 318 carb. It would probably do the job though, at least from what I can see. You'll need other stuff though, kickdown linkage, throttle linkage, etc. There's lots of documentation here on the forum about the conversion. Just saw this so I thought I would let you know, but otherwise I can't vouch for it at all. The part number references to a 76-77 Dodge Truck, 318.

http://www.ebay.com/itm/Holley-Reman-Te ... cb&vxp=mtr

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1970 Plymouth Duster, 198 Slant Six, Super Six setup w/ EI conversion

http://www.semisynthetic.net/kill-9/gal ... p?album=34

SlantSixDan is also very familiar with the 1920 carbs. He might be able to point you to a proper float, or help you diagnose the issue.

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1970 Plymouth Duster, 198 Slant Six, Super Six setup w/ EI conversion

http://www.semisynthetic.net/kill-9/gal ... p?album=34

Someone else also posted about the same issue here: http://www.slantsix.org/forum/viewtopic.php?t=54858

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1970 Plymouth Duster, 198 Slant Six, Super Six setup w/ EI conversion

http://www.semisynthetic.net/kill-9/gal ... p?album=34

Thanks for responding, yeah I read almost all of these posts but none of them have really helped me too much.

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

MoreDoorVal,

This is a very common problem and will take about 30 minutes to fix..

1. Have you installed a new needle and seat yet? and reset the float height? That will usually take care of the problem your describing. Massive heat soak and a old needle and seat the (tips breaks down very quickly with the ethanol in the gas) will cause this condition. I watch the fuel pressure gauge on mine like a hawk and if I see it dropping after shut off I will change it. Usually every two years.....

2. Do you still have the small conical spring under your float?

3. Is your float red plastic/foam? or black?

Daytona and Rock Auto can help you out with parts....and I have seen several floats recently on eBay.

4. Have you checked the jet size in your Holley?

I get great mileage with my 1920 Holley.

You can see pictures of where I have the pressure gauge installed by clicking on the red link below my name.

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

Aggressive Ted thanks for the response.

I've never opened the carb up, waiting on a rebuild kit as the car is drivable just not how I'd like it to be running. I know there is a conical float spring and it is a black nitrophyl. No side hung floats currently for sale for my specific carb model... There is one for the 1920, but it's not correct. It's heavier and large diameter pin

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

MoreDoorVal,

The needle and seat should fix it.....

I would not worry about your carb number when it comes to a float......
If you really think you need a float.....they are universal....red foam, black foam or the brass floats. I have tried them all in several 1920 Holley designs thru the years. I have one carb with the red float, another with Mike's black float. They all work just fine.

I have used these.. http://www.mikescarburetor.com/Holley-1 ... _p_24.html

This page lists all three floats...
https://buy.walkerproducts.com/carburet ... nents.html

Here is nice one on eBay......
http://www.ebay.com/itm/Holley-NOS-1920 ... 03&vxp=mtr

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

Okay, I think I may go with the float on eBay and a carb kit from Mikes carb. Hopefully a fresh rebuild will prevent future problems.

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

Check the link killnine gave you in his third message. matv91 (and others)helped me with the float question. Sure you need the Walker kit, as AgressiveTed said. Also, if you buy the float, buy the spring too. Depending on the float you already have, the spring you have might or might not work.

OAnother thing to check is if the breathing valve (don't know the exact name) at the top of the carburetor bowl is working properly, and if the lever that operates it is calibrated. This valve is supposed to open only when in idle (or near idle). There is a screw you need to adjust to make it work properly.

There are links to the Holley 1920 manual in this site, you should look at them.

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/6 Dodge Charger 69
...there's nothing like using the "Search" link above to solve most of your problems...

Link to carburetor manuals:

http://www.slantsix.org/forum/viewtopic.php?t=33102

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/6 Dodge Charger 69
...there's nothing like using the "Search" link above to solve most of your problems...

Thanks for everyones input on this so far!

cpslntdchrg, I read through that post a few times before, but that was a good reminder, I will order the heavier spring as I am 90% sure that my carb has the "Newer" lighter float.

My other concern though was float pin diameter, I am sure if the pin is slightly bigger or smaller than the older model 1920s it will still work with some slight modification, but what if it is much bigger or much smaller? I have heard that not only the weight and slight size difference but also the pin diamater?

By the way my model number is 6260. It lists as a replacement carb for 68-73 vehicles, my guess is it replaced the original carb at some point before i owned the car. Possibly due to similar issues that I am encountering

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

MoredoorVal:

That carb number has a 7.5 gr float, as from

http://www.carburetor-parts.com/Holley- ... p_483.html

But you should have no trouble installing the heavier float with the stiffer spring. I guess Holley did the change to improve/smooth something (maybe improving emissions via a lower idle? I don't know), but the earlier 1920s used the heavier floats by design, and I don't think they changed the carb internal design (and that float is the one that is available now).

About the float pin hole diameter, I have both float types, and they have the same pin hole size. The only difference is the weight, not the geometry.

Did you check the vent valve/vent valve lever? And the vent valve lever calibration screws in the throttle lever? Does the lever spring works properly? (See vent valve adjustment item at the end of the service manual). Your kit should include a new vent valve too.

Some other reason for that leak (but all these probably will cause a stronger, more continuous leak):
1- leaking power valve? (You will solve it with the rebuild kit too).
2- bad bowl gasket (New gasket in the kit)
3- leaky fuel line connection (you can check that at idle)

Good luck, keep us posted.

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/6 Dodge Charger 69
...there's nothing like using the "Search" link above to solve most of your problems...

Thanks for all of your wisdom Cpslntdchrgr

Hopefully one day all this carb stuff will come just as natrually and fluently as it comes to you! Haha.

I think if I take my time with the rebuild and get the correct spring like you said it shouldn't make Too much of a difference. I'm sure no matter what it will run much smoother so long as I set everything to spec.

Thanks guys I feel really welcome here!

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19 Years young with a passion for all things old.

"Four doors for more....screaming passangers..(;"

"There's no replacement for displacement, but my \6 is still cooler than your V8"

Ok, point taken. Sorry for being so annoying, there was no need to throw a lot of stuff. The simplest explanation/solution is usually the right one. So do as Aggressive Ted suggested (as I did when he helped me the first time I wrote in this forum). If things do not improve, then is time to scratch your head with other stuff, and you will find people that will help you anytime.
The little I know mostly came from this forum/website (Many thanks to all people involved in this site!!)

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/6 Dodge Charger 69
...there's nothing like using the "Search" link above to solve most of your problems...