Ok, I know we have done this before, but we're doing it again. I have the choice of a edelbrock performer intake/performer carb, or a edelbrock performer intake/holley carb, or a Weiand Manifold/600 cfm Holley Carburetor. Im leaning towards the Weiand Manifold/600 cfm Holley Carburetor. What do you guys think? Btw, what is a Offenhauser Manifold? i never heard of them before.
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2000 GT Mustang Convertible
1966 Mustang coupe- all original, soon to be 4v swap.
I got the holley carb and wieand intake. I am aiming to start it up by sunday. I always work weekends. You need a special part. it is a transmission kickdown something. <--- Easy to install though.
Edelbrock all the way. Most work perfectly right out of the box. And if you're running a 289 or 302, the 600 cfm will be too much carb. Go with the 500 cfm.
Yeah Tyler, but that holley im looking at is not a universal, it's for a Ford. And Yeah, I know Dan, I am one of the guys on here that discourage people buying the 600 CFM carbs, but it's a package deal, and a good deal at that. Maybe ill tune it with smaller jets or something. I am putting some bigger heads on it too though, so that might help alittle.
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2000 GT Mustang Convertible
1966 Mustang coupe- all original, soon to be 4v swap.
I like the Holley just because I have worked on so many and I'm familiar with them. I have never worked on the edelbrock. Go with what you know I guess.
What he said, been there done that... Go with Edelbrock all the way and stick with the 500cfm.
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ORIGINAL: Dan66
Edelbrock all the way. Most work perfectly right out of the box. And if you're running a 289 or 302, the 600 cfm will be too much carb. Go with the 500 cfm.
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Joined: 12/21/2003 From: United States Status: offline
I went with the Edelbrock manifold and carb as well as the matched Edelbrock Performer Plus cam. I like the idea of everything matched and has been dyno'd by Edelbrock. The carb worked great right out of the box. As to 500 or 600 cfm (I went with a 600) it depends not so much on cubic inches as the level of modifications you have done to the engine. A basically stock small block is fine with a 500cfm, but with performance cams, headers and such, a 600 is good too. Might runs great. As to Holley carbs (and a lot of people are partial to them) they are prone to the power valves blowing out. Edelbrock's are not.
Yup, SOS.... Anyhow, here is my $.02. I've used both over the past 35+ years, back when an Edelbrock was just a Carter AFB and I like both. If your car is a daily driver and you don't want to have to adjust it every so often, go with the Edelbrock. If you want the most HP your motor can produce and more tuneability, go Holley. I also prefer the automatic choke on the Holley vs the Edelbrock as the pull-off works much better and it's more adjustable. I also have a soft spot for Autolite 4100's. They are bullet proof and deliver a fair amount of performance. As far as manifolds are concerned, take your choice. In my opinion, any dual plane manifold will work well in a mild street engine that isn't twisted past 5k or so.
Posts: 223
Joined: 12/21/2003 From: United States Status: offline
More $0.02 - The Autolite 4100 is renowned as a carb. Good as anything, but getting harder to get and pricey. Way to go if you are concours. Holley, Edelbrock (they are Webers by the way), Autolite - to each his personal preference and affordability. I converted my 600 cfm Edelbrock from manual choke to electric. Works like a champ. Right out of the box it was a bit lean (My headers probably did that). I have an exhaust gas analyzer and a little tweaking to the idle mixture brought it right into specs plus the idle is smoooooooooooooth.
If those of you with Holley carbs would set your timing and valves and distributor curve before starting your engines you will not have backfires through you carbs which is what blows out most power valves.Holley's are fine carbs,but like anything else must be set up properly.A healthy 289 likes 10 to 12 degrees of initial advance with a total advance of 36 to 38 degrees all in by 2500 to 2800 rpm max.With a 600 cfm holley running a 10.5 power valve and vaccum secondaries you will have a smooth running machine. If you have 10.5 or higher compression,solid lifter cam and headers,they actually run very well with a 715 Holley as used on the old Cobra motors. If you are running conservative street motors that rarely see 6000 rpm a 500 cfm carb will suffice,but from 6500 to 8000 rpm on a screaming 289 the extra cfm is where the power is.
I see many people like the holleys more, so i will probably go with the wieland intake, with holley. SO you think that 600 CFM would be ok? im also getting bigger cast iron heads, and cam.
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2000 GT Mustang Convertible
1966 Mustang coupe- all original, soon to be 4v swap.
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Joined: 2/17/2005 From: San Francisco Status: offline
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ORIGINAL: 65GTin GA
More $0.02 - The Autolite 4100 is renowned as a carb. Good as anything, but getting harder to get and pricey. Way to go if you are concours. Holley, Edelbrock (they are Webers by the way), Autolite - to each his personal preference and affordability. I converted my 600 cfm Edelbrock from manual choke to electric. Works like a champ. Right out of the box it was a bit lean (My headers probably did that). I have an exhaust gas analyzer and a little tweaking to the idle mixture brought it right into specs plus the idle is smoooooooooooooth.
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wow, i just wanted to comment how nice looking that engine is. i love the black/silver/chrome!!! looks sweet.
You've never heard of Offenhauser? er offy as usually called. They have been around longer then edelbrock. They are used alot on hot rods. They work very well though. http://www.taperformance.com/offenhau.htm
Posts: 223
Joined: 12/21/2003 From: United States Status: offline
Thank you Shifty101Easy, Always nice to hear nice comments from other Mustanger's. Looks nice in the car too (I think) especially with the JBA plated headers and aluminum a/c compressor.
My $0.02, I run a We... Stealth on my 65 right now, 302, deccent cam, 10.6:1, an Edelbrock 600 right now, just took the Holley 600 vac secondaries off. I all so just took the Edel tourqer 2 off. I have ran both Edel and Holley carbs as well as intakes on it. The performer rpm is fair, I hated the performer and the tourquer 2 was actually very impressive for a single plain (small runners I guess). If your around 280-400 HP, from my exp the tourqer 2 is actually a good but less obvious choice, you do loose about 400-600 rpm down low but who here is running a stock converter if not a 5 speed? As for the carbs, I lean toward the Weber/Carter/Edelbrock (they are all the same, just depends on where you buy em). The holley out of the box had a little more bottom end and just a hair more above 6000 than the Edelbrock out of the box but the Edelbrock was noticabley stronger between 2300 and 5200 on the current P.O.S. 302.
The biggest problem with the edelbrock off the shelf is the secondairies, they are like Quadra Junk, mechanical with no accelerator but they have a vacume opperated airdamn to prevent airflow till there is vacume. They want these to open when yuo bolt it on but that's not exactly the best thing unless your carb is smaller than you need (kinda hurts your bottom end from a dead stop). if you don't mind and have the time and the extra 50 bucks for the tune kit, generally increasing the secondaries rods jets and all that good stuff to the next couple of sizes and changing the springs to open the secondairies a tad later, they actually have the same or better acceleration than a holley and require a lot less attention.
Holley's are hands down the way to go for all out race setups but every one I have ever ran, if the weather or humidity changed much you had to adjust it, the Edelbrock didn't care.
If you only run one of those glass fuel filters that every one has used at one time or another, with the plastice white filter, DO NOT use a holley, it will get trash in it and make you walk, the edelbrock could care less, they are MUCH more tolerant of trash than a holley.
Edelbrocks are much less likely to "boil" the fuel than a Holley, the holley uses a some what large flat bottom fuel bowl where the edelbrock uses a deep narrow bowl that absorbs much less radiant heat from the intake, which does get hot.
In short, if you can't tune it buy an edelbrock they are pretty much bolt on and go, if your competent enough and really do understand the venturi pricipal and how a carb actually works (fuel is not sucked out) then either one is an excelt choice IF and ONLY IF you can tune it to your engine.
The BIGGEST problem I have ever seen from a Holley was that some one "knew how to work on it" and got it out of whack.
heck i have a 289 edelbrock performer RPM package with heads intake cam lifters roller rockers and new pushrods with edelbrocks 750 cfm carb and it runs fine...
I see many people like the holleys more, so i will probably go with the wieland intake, with holley. SO you think that 600 CFM would be ok? im also getting bigger cast iron heads, and cam.
That depends on the cam. Are you looking at a bundled set up? I know that Summit sells intake, cam, and carb all bundled together for a little bit less than buying each item seperately. I'm going to make a wild assumption here, but I assume that they wouldn't bundle parts that wouldn't work well together. With the correct cam, intake and exhaust, you can run a 750 cfm carb as Jamison posted.
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68 Mustang Coupe, 289 58 Chevy Apache, 235 Living together in harmony, mostly.
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Holley or Edelbrock - 
I have the choice of a edelbrock performer intake/performer carb, or a edelbrock performer intake/holley carb, or a Weiand Manifold/600 cfm Holley Carburetor. Im leaning towards the Weiand Manifold/600 cfm Holley Carburetor. What do you guys think? 
and the tourquer 2 was actually very impressive for a single plain (small runners I guess). If your around 280-400 HP, from my exp the tourqer 2 is actually a good but less obvious choice, you do loose about 400-600 rpm down low but who here is running a stock converter if not a 5 speed? As for the carbs, I lean toward the Weber/Carter/Edelbrock (they are all the same, just depends on where you buy em). The holley out of the box had a little more bottom end and just a hair more above 6000 than the Edelbrock out of the box but the Edelbrock was noticabley stronger between 2300 and 5200 on the current P.O.S. 302. 