what carb should i use on a 283? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-16-2011, 10:34 AM
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what carb should i use on a 283?

hey yall i have a 64 nova with a 283 i want to know what carb i should run. i have the power pack heads ported and polished, have roller tip rockers, 280h comp cam, holley street dominator intake the intake is gasket matched, hi perform hei, i have a holley 600cfm and i have had nothing but problems with it and now it finally bit the dust. what should i run i really dont want to run another holley or edlebrock. when the holley worked it ran well sould i go demon is the summit racing any good etc. what do yall think?

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Old 10-16-2011, 11:20 AM
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This would be my choice.....but that's me



Personally I like Edelbrocks for for street single 4 BBL aplications.

When you say the carb bit the dust what exactly is it doing or not doing?

I'm not throwing stones at your build but some more information would be helpful. The 283s are pretty displacement limited and the power packs originally only came with 1.74 intakes. The intake seems like it might be a little much for that engine unless you're really spinning it up with a lot of gear and stall convertor (if you're running an auto).

If you have had a few backfires thru the carb you have it could be as simple as a blown power valve, but changing carbs will only do so much if you have a bunch of mis-matched parts.
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Old 10-16-2011, 12:08 PM
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i have a powerglide in it working on getting 3:73bfor rear the intake is good from idle to 6000 i figured it would be good do you think i should run something else? i bought this carb 5 yrs ago and it randomly starts just dumping fuel into the secondaries and wont ever stop it will just keep dumping fuel. ive cleaned it up before and it would stop now it wont and it constanly is always changing and i have to keep tweeking it witch is to be expected but its not a race car so i dont think it should just be constanley changing.
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Old 10-16-2011, 12:09 PM
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This should work well for you: http://www.summitracing.com/parts/SU...00VS/?rtype=10 Good sale price too and it comes with a tuning DVD to help you set it up It is possible from your post you may be getting some erratic fuel pressure invest in a Holley regulator and set it at 5.5 psi.
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Old 10-16-2011, 12:10 PM
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Quote:
Originally Posted by JeffB
This should work well for you: http://www.summitracing.com/parts/SU...00VS/?rtype=10 Good sale price too and it comes with a tuning DVD to help you set it up
X2 should be fine.



Cole
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Old 10-16-2011, 12:17 PM
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i do have a fuel pressure reg. and its set at 5.5psi but do you think maybe its the fuel pump its supposed to be 115gph electric pump and the pump is not supposed to need a regulator but it did this similar thing with the carb and i put a reg on it and it all went away maybe i have a crapy pump.
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Old 10-16-2011, 12:26 PM
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thinking about it more the pump is always making crazy noises all the time sometimes it make the fuel lines vibrate i have everything insulated and strapped tight and even still makes noise i know theyll hummm but it dosent hummm it crazy
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Old 10-16-2011, 12:32 PM
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Be a good place to start sounds to me.



Cole
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Old 10-16-2011, 04:23 PM
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Any reason you can't run a stock SBC fuel pump? Electric pumps are unnecessary on an older street car.If fuel is dumping in the secondaries, it sounds like the float may be misadjusted. The float itself may even be bad. After 5 years, it's time for a rebuild anyway. If you have one of those round chrome fuel pressure regulators, throw it away. It's junk.
280H cam is large for a street 283.
You say you are getting 3.73 gears. What gears are you currently running?
The P Glide consumes little HP. If you want more performance, think about a TH350. Consumes more power but has better gear ratios and is the same length as the PG so the driveshaft will still fit.
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