283 problems - Impala Tech
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post #1 of 8 (permalink) Old 04-16-2011, 01:16 AM Thread Starter
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283 problems

It will not start unless I pour fuel directly into the carb. Before this it was running fine but it quit after about an hour of running now it will not start on it's own. I am getting spark and fuel just wondering if my quadrajet is junk. I have three quadrajets 1 is rebuilt but it doesn't start unless I pour fuel in it also. I also have an edelbrock 600 that needs to be rebuilt. Just wondering if you guys. Could help out if I am on the right path with getting one of the four carbs rebuilt and which one is best for a 283.
The rebuilt quadrajet is off an olds 455 so I thought it was too big.
The other two are off of small blocks a 350 and the one that is on it is off of a 305.
The edelbrock is a 1406 that somebody took the electric choke off of. But hey all 3 were free so why am I complaining

Belairdad
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post #2 of 8 (permalink) Old 04-16-2011, 09:30 AM
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Maybe you get what you pay for.
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post #3 of 8 (permalink) Old 04-16-2011, 12:25 PM
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I'd use the Edelbrock 1406, but I'm biased because that is what I ended up putting on my 283 and with very little tweaking, it seems to be a good fit.
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post #4 of 8 (permalink) Old 04-16-2011, 12:59 PM
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....have you checked to see if your fuel pump is working?
....sorry...re-read your post....you say you are getting fuel........sounds like the accelerator pump is bad in the carb....but wouldn't think you could have all bad carbs.........

Kevin

'63 Impala SS 409/425 owned since '71
'64 Impala SS 327/300 factory 4sp p/s p/b air
'66 Impala 327/275 glide 2dr/hdtp
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post #5 of 8 (permalink) Old 04-16-2011, 01:18 PM
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Common complaint with an old Rochester QuadraJet carb is the fuel bowls are sealed with two welch plugs (press in freeze plugs) that work loose and leak with time. When you rebuild the Rochester QuadraJet drill and tap the hole for a pipe plug and Loc-Tite it in place.

The 455 Olds carb will be rated at 780 cfm max (not to worry as your 283 will be hard pressed to draw that much). The SBC QuadraJet was rated at 620 cfm and will have smaller primaries to save you on gas, compared to the big block carb. But since you probably have a gas leak now, any change in a carburetor will offer an improvement in mileage.

The beauty of the QuadraJet carburetor is you can not have a too big a carb on your engine no matter how small it is. The QuadraJet only flows what the engine needs by way of it's variable venturi rear barrels, so you can never over carb with a QuadraJet.

The AVS Carter also know as an Edelbrock carb will require a different manifold to bolt to your car as it has a square (equal sized holes) bore. The QuadraJet manifold has two small holes up front and two very large holes on the back. The factory cast iron manifold doesn't flow very well as it was manufactured with cost in mind taking precedent over function (performance). So if you are going to use the Edelbrock instead of the QuadraJet you will need a different manifold. You can buy them used at a greater cost saving as they have no moving parts and do not wear out. (beware of stripped bolt holes, cracks from over tightening and warpage from an over heated engine though). Even an older style Edelbrock or Weinad manifold will be an improvement over the factory manifold.

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post #6 of 8 (permalink) Old 04-16-2011, 06:05 PM Thread Starter
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So can you get the edelbrock to work on the stock manifold


Belairdad
1964 Belair 4 door
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post #7 of 8 (permalink) Old 04-16-2011, 07:55 PM
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With an adapter plate you should be able to.

http://www.holley.com/17-6.asp

Big Dave
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post #8 of 8 (permalink) Old 04-16-2011, 08:49 PM Thread Starter
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Thanks I'll look into one and hopefully the edelbrock will work


Belairdad
1964 Belair 4 door
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