quadrajet verse edelbrock carb

roger garber wrote:

 > i have a quadrajet carb on a olds 455 motor and was going to put a edelbrock
 > 750 carb on it, the oldtimers that i talk to say keep the quadrajet and the
 > younger guys say go with the edelbrock.. what is the pros and cons of each?
 > i hear the quadrajet will get way better gas mileage. the motor is in a 58
 > buick special with no internal mods done to the motor. the only thing i will
 > be changing is to a edelbrock performer intake. any help is appreciated on
 > this matter
 >
 >

The edelbrock is a repop of the old Carter AFB, I personally like 'em
but the Q-jet is OK although I don't think it will fit on the Edelbrock
intake. Edelbrock will be easier to find tuning parts for. Both IMHO
are better than Holley for a street car as they don't leak gas all over
your engine.

nate

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 >> Stay informed about: quadrajet verse edelbrock carb 

In article <C9P4c.4102$P45.3784@fe1.columbus.rr.com>, baggedgt.RemoveThis@woh.rr.com
says...
 >
 >i have a quadrajet carb on a olds 455 motor and was going to put a edelbrock
 >750 carb on it, the oldtimers that i talk to say keep the quadrajet and the
 >younger guys say go with the edelbrock.. what is the pros and cons of each?
 >i hear the quadrajet will get way better gas mileage. the motor is in a 58
 >buick special with no internal mods done to the motor. the only thing i will
 >be changing is to a edelbrock performer intake. any help is appreciated on
 >this matter
 >
 >
Although I am not a fan of Qjets, they are reliable, and the spreadbore
design seems to promote better fuel economy if you keep your foot out of
it, and keep the secondaries closed for normal street driving. The Edelbrock
repro seems to be jetted way richer on the primary circuit than what the
original AFB units were. Many people have 'load up' problems while idleing
in traffic.

I run only the original 625/650 AFB Carter units. I do several mods to get
a nice bench flow of around 700cfm out of the little units. I never had
good luck with the Carter Comp series of AFB units, and they suck in daily
traffic.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: quadrajet verse edelbrock carb 

gudmundur wrote:
[SNIP]
 > Although I am not a fan of Qjets, they are reliable, and the spreadbore
 > design seems to promote better fuel economy if you keep your foot out of
 > it, and keep the secondaries closed for normal street driving. The Edelbrock
 > repro seems to be jetted way richer on the primary circuit than what the
 > original AFB units were. Many people have 'load up' problems while idleing
 > in traffic.
 >

This reminds me to ask a question about my carb. I have a 4bbl Quadajet
from a 1980 model car on a pretty much stock 350. The only problem I
have is when I start the engine after it sits for a good 4 hours or so.
It will start and then imediatly die. It acts like it is loading up or
flooding out. I have to punch the throttle a few times to get it to
clear out so it will run. What causes this and how do I fix it? The
casting plugs have been epoxied over. But they could still be leaking.
Any help is appreciated.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: quadrajet verse edelbrock carb 

Kevin Earls wrote:
 > gudmundur wrote:
 > [SNIP]
 >
  >> Although I am not a fan of Qjets, they are reliable, and the spreadbore
  >> design seems to promote better fuel economy if you keep your foot out of
  >> it, and keep the secondaries closed for normal street driving. The
  >> Edelbrock
  >> repro seems to be jetted way richer on the primary circuit than what the
  >> original AFB units were. Many people have 'load up' problems while
  >> idleing
  >> in traffic.
  >>
 >
 > This reminds me to ask a question about my carb. I have a 4bbl Quadajet
 > from a 1980 model car on a pretty much stock 350. The only problem I
 > have is when I start the engine after it sits for a good 4 hours or so.
 > It will start and then imediatly die. It acts like it is loading up or
 > flooding out. I have to punch the throttle a few times to get it to
 > clear out so it will run. What causes this and how do I fix it? The
 > casting plugs have been epoxied over. But they could still be leaking.
 > Any help is appreciated.
 >


possibly this and it can be done on car
w/o removing the complete carb..

take the top off the carb., there are 4 sm.
brass tubes that will be coming down in the
rear, my guess is one fell out or is loose.

they effect idle or high speed depending on
if its the outer or inner pairs.






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 >> Stay informed about: quadrajet verse edelbrock carb 

On Sun, 14 Mar 2004 02:09:38 GMT, "roger garber" <baggedgt DeleteThis @woh.rr.com>
wrote:

 >i have a quadrajet carb on a olds 455 motor and was going to put a edelbrock
 >750 carb on it, the oldtimers that i talk to say keep the quadrajet and the
 >younger guys say go with the edelbrock.. what is the pros and cons of each?
 >i hear the quadrajet will get way better gas mileage. the motor is in a 58
 >buick special with no internal mods done to the motor. the only thing i will
 >be changing is to a edelbrock performer intake. any help is appreciated on
 >this matter
 >
I had to make that decision a while back and someone I know and trust
told me to take the q jet into a carb shop to custom tweek it. I was
totally impressed and I have owned a hell of a lot of chevies over the
years. This one rocked. You take the carb off the car, take it in
and they redo it, you put it back on.... Best money I ever spent on
carbueration IMHO.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: quadrajet verse edelbrock carb 

Why waist good money on buying a replacement Quadrajet or carburetor. A replacement Qjet will have the same trouble down the road anyway. The biggest trouble with the Qjet are the throttle shaft bushings and the warping of the air horn and fuel float bowl assemblies. Warping happens when the two front mounting bolts are over tightened. Because of the thick gasket between the fuel float bowl and throttle plate it allows for the bolts to just keep tightening and this is the main reason for the warping. This causes internal vacuum leaks, fuel to leak and poor performance. You can see this warpage by placing a straight edge over the 2 front bolt holes to the matting surfaces. If you can see daylight you got warpage. If the engine wont idle more than likely the throttle shaft has vacuum leakage. Addressing these issues and you'll have what we think is the best carburetor made to date.

Dennis
 >> Stay informed about: quadrajet verse edelbrock carb