Thinking of buying a Street Demon Carb...

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Over 2 pages of this and no one has yet answered the OP's question regarding choke to air cleaner clearance.
Unfortunately, I can't either; all I can say is that I've been running a Holley Street Demon on my V8 powered 47 Jeep for over 2 years now and it works great right from the box. It replaced a worn out TQ on a stock Shivvy 350.
I guess every site has to have some stroke with an opinion.
 
Buy a edelbrock, put it on, adjust it how you like. Never touch it again. No issues with air cleaner fitment on the eddy carbs. Not sure about the street demons. I also have heard they are just as finicky as holley
 
694spd said:
I was originally leaning toward the Thunder Series AVS until I saw the price of the Street Demon yesterday, but after reading some of the talk on the Demon, I'm now rethinking the idea of getting the Thunder Series AVS.
I just looked at the Holley HP Series on line and I see that none of them have a choke, so they are pretty much a race carb. My 340 is bone stock. I'm looking for something a little tamer.
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The thunder series avs on my 340 has performed flawlessly over the last 5 years. Only thing youll ever have to do is adjust the idle every blue moon other than that fires up everytime and stays where you set it
 
Somewhere around post 41 is a short accurate answer from a real life experience. Kinda enjoyed that.
 
BTW gotta speed demon on my 400 dart and a street demon on my 360 cuda. Still trying to tune an off idle bog on both but that's my crappy tuning skills I'm sure. Any other rpm they both scream. Gives me something to work on. BTW Merry Christmas!!!!!!!!!!
 
I have ran a 625 street demon on my truck for the last 4 years, it works great, starts easy cold 0 deg F, and will also start hot with no issues.
You do have to buy the mopar throttle arm and dissemble the carb to put it on.
I really like the polymer body, because it solved my vapor lock issues I was having with a 3310 holley.
Also the carb gives decent gas mileage, I got 14.6 mpg out of the last tank of fuel. Keep in mind this is good mpg for a 78 W150 4x4 with no overdrive.
Sorry I cannot answer your air-cleaner question, but I really don't see any issue with it clearing.
 
694spd said:
I see that Jegs has the Street Demon Carbs on sale this week for only $281. I'm thinking about buying a 625 polymer bowl one for my stock 1969 340 4-speed Dart. I planning on using the factory air cleaner, but I have read that some people have had clearance issues around the electric choke using stock air cleaners. Anybody running one of these Street Demon carbs and are using the 68-69 factory air cleaner?
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Well I actually have one on my Duster. It will hit the choke house unless you get a spacer for your air cleaner or buy the Demon air cleaner. I am very happy with this carb. I wrote an honest thread about it here. It ran great out of the box, but then I had some issues, but I sorted them out and in the end of that thread you can see me doing a burnout. For the price I think it is really good.
 
This is my Duster with the 625 Street Demon, the engine is a 1965 273 commando. After tuning it properly with a wideband it has great response, no stumbles or bogs etc. Simple carb to work on and I like the price and the looks.

 
BTW when I got my Demon carb they threw in a nice chrome aircleaner.
 
Clears the choke and clears the hood even with an airgap. Linkage took a little work. Hope this helps.




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Are those street demons a spread bore like the thermoquad or will they bolt on his 69 intake without an adapter? If he need to add a 1" thick adapter, I think I'd find a decent avs to rebuild or go with an Edelbrock since he wanted to keep it stockish looking
 
3 pages on about what carburetor is best or worse! And no one has been able to answer the Op's original questions and only a couple have tried. Can we just stick to the topic on these threads! :BangHead:
 
That's why I was asking if those plastic demons will even bolt on without an adapter? Avs kits are still available and they are pretty straight forward carbs to rebuild. Run pretty decent too. For the price of that demon, op could have that avs rebuilt, and have money left over for plugs,wires,etc since its been in storage for quite awhile
 
To help answer the OP's question, I don't have a stock air cleaner, but I have a drop type base on mine which doesn't clear and AFB(AVS) with an electronic choke but it fits the Street Demon just fine.

Dartish said:
Are those street demons a spread bore like the thermoquad or will they bolt on his 69 intake without an adapter? If he need to add a 1" thick adapter, I think I'd find a decent avs to rebuild or go with an Edelbrock since he wanted to keep it stockish looking
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The Street Demon is not a spread bore, the secondaries are a "goggle valve" type flap that will work on a square bore base intake just fine. However I'm not sure if they will work bolted right up to a square bore 340 intake is not completely open in the middle.
 
Goggle valve is BS marketing crap. It's a three barrel.
 
Similar to the old Holley 3 barrell with one secondary throttle blade?
 
Dartish said:
Similar to the old Holley 3 barrell with one secondary throttle blade?
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It sure it. It's like a Thermoquad and a Holley three barrel got jiggy and had a baby.
 
Looks like he'll need an open spacer or really thick gasket for that to work on a 69 iron intake.
 
694spd said:
What I'm trying to do is put the car back on the road after sitting for the last 41 years in storage. The engine is all original and I still have the original AVS carb, but it will need rebuilding. I kind of looking for a new carb that will pretty much work right out of the box for the initial restart of the car next spring. I still want to use the original air cleaner if it will fit without a clearance problem.
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I'm running the factory AVS on my 68. They are very easy to rebuild and work really well, in my opinion.
 
I think the 3310 is one of the best sb carbs there are!!! 30 people will disagree. I've got an old time 780cfm on my Dart covered up by the original air cleaner. Been on there forever. Put a kit in it years ago when the accelerator pump started leaking, no trouble since. Sounded like the original poster wanted to look stock since the cars pretty original, was interested in the Demon because of price. I'd rebuild the AVS and use that extra money for the stuff it's gonna need from being stored for so long
 
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