Put a 750 Edelbrock on my 427 in 2000, and it lost so much performance I thought the new engine rebuild had an issue! Fought that carb to try to get it to perform for a year. Wasted money on a strip kit, and too much time. Finally tossed a 750 Holley on it and it came to life. I'll never buy another Edelbrock carb.
I did some A-B-A testing on my old International at an 1/8 mile track a long time ago, comparing a 750 Edelbrock and 4779 Holley. And, yea, the Holley was a little quicker (7.20's vs. 7.30's). I know that's not 10's in the quarter, but the Edelbrock was a lot more civilized and less finicky on the street. Neither carb had a lot of work done to them, just some basic squirter changes, and a little tuning. And, I'm gonna run a Holley (Dominator), on my track only 55 when it's done. So, I'm not really prejudiced against either brand. They just have some different characterisics that make them each a little better in different uses. Larry T BTW, I like QuadraJets too.
I'm no expert & I'm speaking from my own personal experience here. Every holley I've ever had leaked & didn't perform well. I've been an Edelbock man for years and have never had a problem. All my cars are daily drivers not race cars. In fact I'm looking for a nice Edelbrock 650 cfm with electric choke if anyone has one.
I'm running a Holley350 cfm, I like it. It was easy to adjust and my car runs smooth. I never had an Edelbrock. So I can only opinianate on Holley.
This topic is almost as bad as the "Ford vs. Chevy vs. Dodge" fights I used to hear as a kid growing up in the 70s and 80s. Both can be great carbs, as can other brands and designs. I never have had a lot of carb issues, but then I don't furch around with the carb every time I have some kind of issue where a car ain't running just right, (amazing how some folks start "ad'jusitin" a carb every time their car hick-ups, and then blame the screwed up carb) Anyway, only issue I have ever had with an Edelbrock, EVER, was due to to much fuel pressure.... ( I like about 3.5 on an Edelbrock)
I'm gonna guess the 427 had a long duration cam, huge intake etc. and the 750 Holley was a double pumper. In that case a fairer comparison would be a Carter 750 Comp Series AFB but the Holley would still have a performance edge. For a 1/2 tenth I would rather have a more drive able carb than the Holley.
Jon is on the right track here. They do not come prepared to feed anything that takes a deep breath. If you are willing to tinker with it it is a different story. I personally don't care for them myself but I know lots of fellas that do. I have run a couple and they were damned dependable just not real performers without a little work.
The Edelbrock has an inferior design with the vacuume door not having any adjustment other than removing weight or adding weight to it. The Holley, can be fine tuned infinately and has less wearable parts. And contrary to belief, they are excellent street carbs as there are 100,000s of thousands used for this purpose.
Which one? Just kidding, but there are lots of Holley AND AFBs from the factory. Larry T BTW, guess what's hiding under the shield on the Mallicoat Brothers turboed Willys. Here's a hint, it doesn't start with the letter Holley.
Seriously? The 1813 on my Buick has it. http://www.edelbrock.com/automotive_new/mc/carbs_acc/thunder.shtml Seems they have a whole line with it...
Sorry, I was thinking of the Edelbrock generic carb. The AVS Edelbrock is a better carb based on the old AVS. I actually have no bones with this carb. Sorry about the confusion.' If I were to get any Edelbrock, this would be the one to use.
we have a shelf of edelbrock carbs at my shop that we have taken off of every customers car that comes it for running issues or that have been sitting for a while, they were all replaced with holleys. i feel the holleys meter the vacum better and are more responsive to tuneing. they vacum secondaries really help atomize fuel and make the engine burn it more efficently. every customers car i have put a holley on ( from a 71 chevelle to a 49 merc and every 4 barrel application between) have all said they wish they were running one years ago, there cars feel more responsive dont run rich and with the electric choke start like they have fuel injection. no getting in the car pumping the gas one and a half times (or more) then starting it. i personaly run holleys on all my own cars (that have a single 4 barrel intake). if you use the correct carb for your application and understand how to set one up and tune it you should never have a problem. so many times we have customers bring us there car with a regular stock ass 350 or 302 and want to put some huge holley 850 double pumper on it. obvioulsy if you do something like that you will not only be wasteing money and time put ur performance will be affected. all in all i say the correct holley for the application will beat the edelbrock any day of the week.
Quality equals more money. Funny how Edelbrock knew the flaw in their design and came up with the AVS thunder series. Finally!!! Yet people will dish out close to $300 for a piss poor design instead of an extra $50 and get a better all around carb. The 800 Holley on my 400 Pontiac that has stock non ported heads loves this carb with a 0-60 ft time of 1.6 seconds and 0-60 mph in 3.8 seconds. Thats flat out fast throttle response. Not bad for a very low budget 400. The car weighs 3810 lbs with me in it and does 12.5s in the 1/4 on pump gas. This car also sits for 6 months to a year sometimes and it always fires right up. I have never had to mess with it since installing it over 10 years ago. Now the Holley 4160 is about as lame as the Edelbrock performer series and run about the same costs. So back to what I stated, go cheap and pay the price. This goes with either brand.
Carter's design... The lower budget carbs are still fine if you tune them correctly. I find no problems with the Carter AFB or Edelbrock if the time is taken to actually set the carb up for the engine it's on. Though the added tuning of the AVS was a plus for me.
Damn!!! Are we still bickerin' about this subject???... Just go out and buy a cool Holley carb and "fine tune" it for your application..... And be happy!!
Why don't you be quiet and play with your Mustangs, when you have something to actually add to a conversation speak, otherwise hold your tongue and quit trying to run up your post count.
Lol...... Good morning too you to zman!!! Lol... I don't pay attention to my post count... I don't let that crap bother me....
Blondes, brunettes, and redheads. They each will give you trouble, if you don't treat them right. Can we close this thread now?
I put an Edleborck Performer on my stock Ford 390 last year...other than having to fiddle with the rods & jets to get it dialed in, I have had no problems. Like the others have allready said...fuel pressure is very important...I have mine set right at 5 psi. Also, invest in an Edelbrock rod/jet kit and study your carb's manual to get it dialed in right.
I'v had a 1405 on my 350 for three years with no problem at all. Very smooth, responsive.. good carb.
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