I got the Demon carb brochure from Ramchargers last time I was there, in a nutshell this is what it says.........

Demon carbs are available in sizes from 625 to 1295 CFM and there are four different kinds:

ROAD DEMON - "Designed for the average street performance enthusiast with 200-350 HP...625 CFM...vacuum secondaries, recommended for 289 to 355 CI engines."

SPEED DEMON - "Aimed at the hot rodder with 350-500 HP street or
strip...available in 650, 750, and 850 CFM with vacuum or mechanical secondaries, recommended for 289 to 460 CI engines."

RACE DEMON - "For oval track, drag racing and general competition. Feature removable venturi sleeves adjustable from 675 to 1050 CFM
for engines 450 HP and upwards, recommended for 289 to 510 CI engines."

KING DEMON - "Direct replacement for Holley Dominator. Available with removable venturi sleeves(adjustable from 1095 to 1295 CFM), and fixed venturi from 1090 to 1290 CFM. For engines producing 650 HP and upwards, recommended for 430 to 632 and up CI engines."

"All Demon carburetors feature billet base plates that are vertually unbreakable, unlike their cast counterparts."
"All Demon carburetors feature fully CNC machined metering blocks from billet aluminum to prevent porosity and variations."

Go to your local speed shop and see if they have tie Demon carb brochure. It has everything about them in it.

I have seen one in person and they are very nice. I WANT ONE!!

1978 F-150 4x4
1998 Crown Vic Police Interceptor

 

[updated:LAST EDITED ON 19-Jan-02 AT 08:38 PM (EST)]Yup, Demons are the shiznat. If I were getting a standard Holley type carb I would only get a Demon. Oh, and cowboy, notice I said compare "standard issue"? You are comparing the cheapest Demon made versus the most expensive non-race Holley made. Whatever. As far as trade offs go with the new truck avenger, annular booster are the BEST booster available. Due to cost reasons they have only been available in some of the top race carbs. No trade off there. I'm only aware of it available in the 670cfm variety, which should be fine.

 

back to my origional question???Will a Truck Avenger give the same performance on the pavement as the Street avenger on the pavement-----OR---Is there a trade off for the ability to climb Tall Peaks in first gear at a 40 degree angle?fd:-X11

 

Perhaps I misunderstood your question. I thought you were questioning whether the annular boosters compromised off versus on road combatibility. Which is why I went off about boosters. To answer you question, no, there is no compromise here. And just to clarify, yea, I actually know one hell of allot about carburetors, components, and function, and am not just throwing out info based soley on personal opinion. As much as I like this new Holley design, you can also just get an adapter (don't like 'em myself) and throw on a quadrajet. It would be great off-road too. I'll be getting one of these new truck avengers myself. If you don't thrash off road much I'd stick with a Demon though...its better than any of the standard (or Avenger) Holleys. There isn't anything special about the normal "Avengers" anyways...so what, they included some of their basic add-ons...its not like they are using better boosters, castings, or metering blocks. Don't get me wrong, I love Holleys, Demons are just better made.

 

Proeliator , If the very knowledgeable people that hangout on this website would offer up good , logical , anwswers to questions such as the one you gave in the prior post those of us who are very willing to learn and benefit hopefully will return the favor as our ignorance is replaced by knowledge.......I think part of the problem is that the same questions keep getting "asked" over and over---adinfinitum , and finally the answer becomes---go look in the previous threads---most people don't want to do reasearch---they just want an answer to their problem---And , I'll probably buy the averger street model because the add'tl 70 bucks for a Demon isn't really worth it to me---I'm not going to be drag racing a 6,500 pound 4x4 truck---I have to take care of my equipment---or I don't eat --if you know what i mean , thanks for your help , fd

 

Sandy, you would think by their recommendations, that some of these guys only build their 6500 lb trucks to race.
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In the cool still quiet of night, you can hear chevies rusting away.

 

Glad to help, and the Avenger is a fine carb...even if its not my first choice, it would be my second for a street truck. Yea, you're right, and I do get a bit cranky repeating myself over and over but it can be a chore searching through all the threads...so I don't mind. And then there's John, playing it off like he's never dusted a chivy or three

 

All a Edlebrok is is a shiney QudraJet with pretty red stickers on it. thats what i have now and its been nothin but trouble since i got it, which is my main motivation for getting a new carborator, i just dont want to make the same mistake as i did last time.

 

I'll throw my two cents in just to keep us on track. An edelbrock carb is a like a carter, not a quadrajet. But edelbrock does make quadrajets too, they must have bought the license to build them or something.

Now, to throw us off track/subject:

If I had unlimited money (as some guys do) and wanted the ultimate off road fuel system, I would buy the $700 holley pro-jection. I don't care which carb you buy, they all have their limitations during off-road bouncing and severe angles.

 

I didn't know edel made quadras (!), but did you know they make the carters now? There is no difference between the two carbs, evey though they have a different cfm rating(?). You are of course, correct, in that edel/carters are a totally different design then the quadrajet, which is the best stock off-road carb.

 

My Eledbrock 1406 has Webber on it. I am wondering if Edelbrock is building the Q.jet and Carter, or is Q.jet & Carter& Webber building the Edelbrock?
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In the cool still quiet of night, you can hear chevies rusting away.

 

But doesnt the design use the same consept of gettin the fuel to the engine as a Qudra? i've looked at them and they seem very similair to me, but i havent messed with many V-8 carbs.

 

Well guys , I tried to order the "Truck Avenger" this evening and Summit didn't have a part number---so i went to the Holley website and they don't have a part number listed either ---just the picture---Anybody here have a Part number for the truck avenger????????:-X11

 

Ok guys the q-jet is a rochester carb used by those checy guys, stock issue so to speak. Yes Edelbrock makes a replacement carb, that is the same but new, They also make thier own line of carbs which are nothing but Carter AFB's in fact they now onw that line too and the carbs are the same except the price tag. The Carter AFB was the carb of the sixties for your Mopar stuff. But its a good very basic carb that uses metering rods in combo with the jets to allow for precision air/fuel adjustments without having to remove a fuel bowl just to change a jet. In fact the edelbrock/carter jets can be changed with the carb still on the engine, plus with the rods are infenietly adjustable. Cowboy if you put an edelbrock q-jet replacement carb on your truck, I'm sorry to hear that probably dosn't live up to your expectations. Next time get the AFB design and you will love it. I have fought with Holleys forever to get just the right air/fuel and proper jet size. Each change requiring a tear down. Love my Carter, Its a piece of cake. And while I like to think of myself as being able to adjust a carb, the edelbrock/carter AFB is great for a novice carb guy as it is easy to set up and tune. Holley is using the new AD campaign with the Avengers about how they are ready out of the box, why do you think that is? Holley has long had a reputation of being tricky to get tuned right. Don't get me wrong they make a good carb one of the best if you have the patience and experince to get it right. Hey thats just my two cents and thats all its worth

 

Can't argue with Tongie...Gotta know what your doing to optimize a Holley/Demon. Fatdaddy, I'm not surprised that Summit doesn't have them yet, and I don't know the part number for the Truck Avenger...isn't it on the link I posted in this thread? If not, I'd just e-mail Holley tech and they will take care of you. My local shop says they can get them but I figure Summit will have them in @ a month and I'd rather pay less.