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Author
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Topic: Just how bad is an edelbrock for performance? (carb)
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70bbstang
Journeyman Posts: 64
From: redondobeach CA usa
Registered: Mar 2003
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posted 06-09-2003 01:24 PM
   
does anyone know any tricks for them?? and why are they so bad ??? I always hear they suck but never why. Im going to get rid off mine I think but is there anyway to get it to perform at all???
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clevelandstyle
Gearhead Posts: 1035
From: Connersville, IN
Registered: Jul 2001
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posted 06-09-2003 10:47 PM
Just how bad is an edelbrock for performance? (carb) Performance is a relative term. They perform well going to the grocery store, but they don't perform well on the race track.
Why? Just look down the bores of an Edelbrock carb and ask yourself, "How does the air get through that mess?"
Do the same with a Holley or equivalent. Big difference.:wink:
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Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 351C 4V
[This message has been edited by clevelandstyle (edited 06-09-2003).]
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 06-10-2003 09:57 AM
If you are just looking for something simple to mix fuel and air, the Edelbrock carb may be for you.
They will NEVER be on the same level as a Holley for optimum performance. NEVER!
Don't believe the propoganda you read in the cataloge or garbage from internet proffessors. Before Edelbrock bought the rights to market the Weber built Carter, their cataloge recomended Holleys exclusivly.
One look in the NHRA or IHRA record books will show you that Holley carbs are always quicker and faster than Carters.
Chrysler, FoMoCo, and GM all bought and installed Holleys for their performance applications.
If you want or have just a daily driver and or show type cruiser then the Edelbrock may be a better choice.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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70bbstang
Journeyman Posts: 64
From: redondobeach CA usa
Registered: Mar 2003
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posted 06-10-2003 02:32 PM
well here is my delema I baught a car (70 mustang with a 429) but it has an edelbrock 750 on it Im reading a lot of stuff that says they are a complete POS but its relative to me 5-10 hp loss wouldnt bother me but any more than that and id have to get rid of it. ive heard they arent arent all that bad BUT the 750 in particualr is just plain junk. my mechanic tells me im never getting the secondary open my car in its current state ( cam soon ) only pulls till about 4800 rpm ( It has the crappy edel cam ). so im wondering if when i change the cam out is it worth the cash to go holly 750 or so how much would I gain ?[This message has been edited by 70bbstang (edited 06-10-2003).]
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 06-10-2003 05:22 PM
The primaries on the Ebrock are really sweet but the secondaries just don't cut it. They should design a double pumper with the secondaries just like the primaries! Then I might try one again.  ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)full street trim!
DanH
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Toronado3800
Gearhead Posts: 851
From: St. Louis, MO
Registered: Jul 2001
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posted 06-10-2003 06:31 PM
My Ol' 383 with the Comp 270H cam, Dart Heads, and the Perf 750 was shifting at 6600. Now it mighta made a few more horse with a Holley, but I dunno. My buddy Joe was ALWAYS doing something to both his Hollies.
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Dubz
Gearhead Posts: 1718
From: Manitoba Canada
Registered: Oct 2002
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posted 06-10-2003 07:34 PM
Edelbrock cams arn't crap, they are crane cams re-boxedor were you meening mis-matched, or that crane is also crappy?
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70bbstang
Journeyman Posts: 64
From: redondobeach CA usa
Registered: Mar 2003
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posted 06-10-2003 08:26 PM
its the grind more than the cam, the one the sell with the kit (this stuff was on when I baught the car) the lift is like 460 int 480 exh and duration is like 188 / 194 so needless to say its not workin all that great with 380 gears  I need a a bit more lift and duration and im sure ill be happier.[This message has been edited by 70bbstang (edited 06-10-2003).]
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SundanceKid
Gearhead Posts: 1260
From: UT
Registered: Feb 2001
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posted 06-11-2003 04:21 AM
Alex correct me if I'm wrong, but didn't Fords 460 performance big block use a GM carb? Qudrajet ring a bell?....LOL
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indyphil
Gearhead Posts: 2398
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 06-11-2003 10:40 AM
Can you hear your secondarys? You dont need your mechanic to tell you when your secondaries are opening you should be able to hear them, unless your running open headers or have the stereo turned up too loud.I have a 289 with stock cam and the secondarys open on my 600CFM carb. A little high in the rev range (maybe 2500RPM) but they do open and the engine is very mild. Your 429 even mild should open the secondarys easily. ------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 06-11-2003 11:25 AM
quote:
Originally posted by SundanceKid:
Alex correct me if I'm wrong, but didn't Fords 460 performance big block use a GM carb? Qudrajet ring a bell?....LOL
429 CJ circa 70-71 used a Q-Jet.
460 cars used a Autolite/Motorcraft in standard applications and a Carter Thermo-Quad for the HD/Police package.
460 trucks used a Holley.
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Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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ukracer
Gearhead Posts: 151
From: South Wales UK
Registered: Apr 2003
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posted 06-11-2003 11:41 AM
Ah! The Thermoquad! I have one on my 460CJ and it works great. I paid ?10 for it at a swopmeet (about $15) and I jokingly refer to it as my 'plastic carb' but it makes as much power as the ?500 race Holley 950 (850 with no choke tower etc) I also have for this car. I love it and many other people here who have seen it working are convinced enough that they want one now! Funny old world, innit?
Cheers, Martin.
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SundanceKid
Gearhead Posts: 1260
From: UT
Registered: Feb 2001
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posted 06-11-2003 02:24 PM
quote:
429 CJ circa 70-71 used a Q-Jet.
460 cars used a Autolite/Motorcraft in standard applications and a Carter Thermo-Quad for the HD/Police package.
460 trucks used a Holley.
Thanks for the correction. Still though a Holley wasn't deemed good enough...lol
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 06-11-2003 02:35 PM
There were emissions issues that promted the choices.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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SundanceKid
Gearhead Posts: 1260
From: UT
Registered: Feb 2001
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posted 06-12-2003 03:30 AM
LOL, maybe i'm still bitter about my cranky Holley issues? I've fixed the problem (if you remember) But the fix is basicly makeing it run rich as He!! that's the only thing that stops the hesitation.
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