What carb to get

I just want to know what brand has the most reliable, outa of the box perfomance, and easy to use. I was thinking holly street advenger. Anyone have a demond? Thxs

anyone?

what engine? how much power?
people use 750 cfm carbs for everything between 350 streetcars to 500 hp big blocks. The Demon carbs are nice from what I hear, the HP carbs are also good. Stay away from Edelbrock! I personally use an old Holley 800 DP w/ mech secs. It's prolly a bit much for under 500 hp. I will be looking at a custom carb from Proform or similiar later this year.

if the engine is stock, i recommend a holley 600 cfm electric choke carb. it runs about 230 from summit, part number: HLY-0-1850S. thats a good stout little carb, i use it on my camaro (or one similar anyway) and it works great. but if you want some higher performance, go with demon. nothing makes better power and is more reliable. with a holley on a high performance engine youll be tuning the damn thing every weekend, and thats if you dont blow out your power valve on it, which holley is notorious for. and stay away from edelbrock. a lot of people swear by them, but ive had nothing but trouble with edelbrock carbs. hope that helps out a bit.

thxs a lot guys

the motor is a built 327. I plan on getting a 650-750cfm carb. I might be getting a brand new demond cheap. (long story)

thx for the help

thxs a lot guys

the motor is a built 327. I plan on getting a 650-750cfm carb. I might be getting a brand new demond cheap. (long story)

thx for the help


OK, It's not demond it's Demon LOL :D

sorry last night was a long night.

i had a Holley 650 on my built 327. Vaccum secondaries and an elec choke. Worked greeat for me. I jetted it to 48 and changed out the secondary springs. They also come with a "safety" so you don't blow the power valve

I think all new Holleys come with power valve blowout protection, it's just a check ball

For outta tha box use like you want get the street avenger but a holley 4160 would be easy to tune

edit: the blowout protection kit everybody sells doesnt stop the power valve from blowing, it just makes the port opening smaller

thx s10er8 i didn't know that...

Is a demon the same overall desing as a holly. If thats the case, shouldn't it be hands down holly since they been around longer. correct me if i am wrong

I had a Holley 750 on my 327 which I replaced with an Edelbrock 650 when it blew up. Definitely get a Holley. The Edelbrock is a big piece.

thx s10er8 i didn't know that...

Is a demon the same overall desing as a holly. If thats the case, shouldn't it be hands down holly since they been around longer. correct me if i am wrong

Demon makes a huge note on their website and packaging that they are not Holley carburetors. They do look similar in the casing, but the 750 Demon I have is pretty different internally from the 750 Holley I had. Sadly, I don't have the motor built yet that I plan on sticking the 750 Demon on top of, so I can't tell you how I like it in comparison to the Holley.

I had a Holley 750 on my 327 which I replaced with an Edelbrock 650 when it blew up. Definitely get a Holley. The Edelbrock is a big piece.
that is wut happened to me!

Thx for explaining the difference between the holly and demon

I don't know what you guys did to your edelbrock carbs, but they are just Carter AFB's and as such are perfectly good carbs. My only criticism of them is that they are a bit TOO tunable and unless you keep careful notes of your changes it's easy to get lost and forget where you started.

Yes, and there is some misinformation floating around in here.

0-1850s is a manual choke carb.

There is no operational difference between a holley and a demon. All important parts interchange, and the same tuning principals apply.

The aftermarket power valve protection kits do indeed work just as the holley system does by seating a checkball if a backfire were to occur.

A street avenger carb includes some dubious "features" that may or may not be desireable. The floats can only be adjusted so far, same goes for the choke. At one time they were offering a lifetime rebuild guarantee, you'll have to check if that's still the case.

It would help if we at least knew what manifold you were going to use.

As mentioned for tunability any carburetor with metering rods is a good choice. This would be the edelbrock carbs, the identical discontinued carter afb and the qjet, which can be the worlds finest running carburetor with enough patience.

i ended up getting this

http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?catalogId=10002&storeId=10001&categoryId=12891&parentCategoryId=10271&langId=-1

I got tricked into it. (very long story) Now none of my an fittings and lines will work but it fianlly runs well. (it runs at all is a huge step forward)

I got it for 200 with eletric choke (brand new, outa the box)
When i do something more wild i will upgrade (n20, forced induction, etc)
or i might do a FI swap and get to drive it more often !!!

thats a great little carb, it;ll treat you well. i have that exact carb on my 325 horse 350, and have had NO problems with it. it even keeps a tune better than most holleys ive worked on. enjoy the shiny finish while it lasts though, it;ll fade after a while. check out my page in the link in my sig if you want to see it installed.

yeah they are popular. i like em so much I have 3

http://memimage.cardomain.net/member_images/8/web/2048000-2048999/2048925_7_full.jpg

We're using a Predator on our '70 Camaro. After trying 3 different Holleys, we went with this set-up. The motor is a destroked 400 (386) with cast Iron (unported) heads, Edelbrock Super Victor intake, HEI, .646" lift solid roller. It goes 10.83 @ 125 MPH.
The Predator is a variable venturi carburetor, which means you're never over or under carbureted. It works off engine demand. The Predator has no jets, and only has 2 adjustments....Engine idle, and low speed air/fuel mixture. The A/F mixture is easily set in a few seconds. This is a carburetor you "bolt on and go".
After going with the Predator, I can assure you this car will NEVER have a Holley back on it.

http://www.geocities.com/max_wylde/predatorcloseup2.jpg



Frank

I've always been intrigued by the Predator, although I've never actually owned one.

I have however heard a lot of people complain about them. It has occurred to me that the complainers might have created their own problems, but I'm not in a position to say one way or the other.

Do you have any thoughts on the issue? Perhaps some useful insight and maybe even a theory about what people do WRONG with these carbs?

After having a properly tuned Holley on your motor you will throw the others in the trash can.

I have a couple predators sitting on top of a tunnel ram on a shelf for display...that is the only good use for them.

For pretty much any race motor a Pro series holley will outshine any other carb if it is properly tuned on a dyno by someone who knows how to do it....

We had 3 different Holleys on the car with 2 different Holley "pros" tune them. We went through an AED 950, an HP 850, and a BG 750. The Predator went quicker than any of them...The first time out. We've atleast got a few expensive Holley "paper weights" hanging around, though.

The ONLY disadvantages to a Predator is the lack of vacuum ports, and their height.

The Predator isn't affected as much by temperature changes, either. No jets to change, no pump cams, no air bleeds, no squirters.

While everyone else is stuck in the pits...Trying to get their Holley adjusted to run right, we're on the track.

To quote David Vizard..."a Predator may be down a few HP when compared to A PERFECTLY TUNED HOLLEY". He goes on to ask..."WHEN WAS THE LAST TIME YOU SEEN A PERFECTLY TUNED HOLLEY?"

If you want to go fast with minimal effort, go with a Predator. If you like adjusting stuff and trying to get something perfect, go with a Holley.

BTW, the car has a perfect A/F ratio on the dyno, and we've ran the same spark plugs for 2 seasons.

We also shift the car at 7600 RPM's...So, the Predator isn't RPM limited, either.

The car also idles better with the "race" Predator on it then it did with any of the holleys.

I used to be a Holley fan...Until I seen myself what a piece of crap they are when compared to a good carburetor.

Frank