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Need Carberator Help

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Old Jun 24, 2002 | 07:28 PM
  #1  
Lefty Polaski's Avatar
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Default Need Carberator Help

I have a 74 Corvette with a 70 vintage 350 engine and a very sick Quadrajet. I've had it rebuilt but the bowls still drain when it sits and then backfires through the carb until it warms up. I would like to purchase a carburetor and adapter for it now with the intention of buying a second carburetor and a dual quad manifold when I get the money. I thought an Edelbrock 1400 or 1405 would be my best choice but was told by the tech folks at Summit that they did not know if there was a combination of carb, adapter, and air cleaner that would fit under the stock hood. This is for street use and I was also concerned about installing the carb with the electric choke on a car with a mechanical choke. Has anyone done this and can you please help me out with a selection of products for this application.

Thank You
Lefty
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Old Jun 24, 2002 | 07:37 PM
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Default Re: Need Carberator Help (Lefty Polaski)

My best advice is get in touch w/Lars. He is the carb guru around here. You may want to stay w/quadrajet if you motor isnt too modified. I have 74 w/Air Gap RPM & 750 Demon carb. A drop base air cleaner was necessary.
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Old Jun 24, 2002 | 08:08 PM
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Default Re: Need Carberator Help (Lefty Polaski)

Were the 4 well plugs properly sealed with epoxy?
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Old Jun 24, 2002 | 08:27 PM
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Default Re: Need Carberator Help (Lefty Polaski)

buy a edelbrock Q jet replacement as it would be a direct bolt on. :chevy
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Old Jun 24, 2002 | 11:56 PM
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Default Re: Need Carberator Help (Lefty Polaski)

Since you have a 74 with a 70 engine numbers matching probably does not mean too much. A quality rebuilt unit is about $200. A new Edelbrock Q-Jet can run $450 or more.

I would replace the Q-Jet with a rebuilt unit. Here are two places that I have used and been very satisfyied with both product and service.
http://www.recarbco.com/
http://www.nationalcarburetors.com/

The option of a sqaure bore Holley etc is one, but you will need to swap the intake, get a carb and air cleaner. Hope this give you some assistance.
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Old Jun 25, 2002 | 03:17 AM
  #6  
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Default Re: Need Carberator Help (Turbo-Jet)

Turbo-Jet, I sent it out for rebuild so have no idea if the well plugs were properly sealed with epoxy. Thanks, The Rebuilt or replacement Q-Jet is probably the simplist solution but it doesn't lend itself to a Dual Quad set up later. I sure do appreciate the input from everyone.
Lefty
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Old Jun 26, 2002 | 12:07 PM
  #7  
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Default Re: Need Carberator Help (Lefty Polaski)

I've had one Holley carb rebuilt by a pro and it was the worst mistake I've made in a long time. If you have half a brain, if you're careful and thorough, you can do this yourself. Once you've determined the carb you need ....take it step by step and things should work just fine. I've rebuilt my tri-power setup twice over the years....myself and have had good luck. It's not that hard.....
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Old Jun 26, 2002 | 02:25 PM
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Default Re: Need Carberator Help (Lefty Polaski)

Here's a little secret: SummitRacing.com has "remanufactured" Edelbrock QJets available only on their website. I got a 1903 for $319.95. (You probably need a 1902.) That's well over a hundred bucks less than brand new -- and these carbs are "almost new."

These carbs are warranty returns (less than 6 months old) that had some malfunction. They're put on the bench, completely checked, tested and set up. If any parts need replacing, they use new parts. I'm very happy with mine.

:cheers:
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Old Jun 26, 2002 | 10:29 PM
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Default Re: Need Carberator Help (page62)

Touche to the reply of page 62

Here's a little secret: SummitRacing.com has "remanufactured" Edelbrock QJets available only on their website. I got a 1903 for $319.95. (You probably need a 1902.) That's well over a hundred bucks less than brand new -- and these carbs are "almost new."

Most carbs returned are not defective but either grossly misadjusted or the problem was with some other part of the car ie. ignition, fuel pump etc.

Very good advice if that is your interest. Also, review the post I put up earlier about National Carbs and Recarbco. One has a 1 yr and other has a lifetime warranty.
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