Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

carb V8 383

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Old Nov 1, 2011 | 06:26 AM
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Reni-Camaro's Avatar
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From: Ukraine
Car: Camaro 1988
Engine: 305 14.5s 1/4mile
Transmission: T5
Axle/Gears: 2.73 LSD
carb V8 383

What carb do you recommend?

What Distributor and ignition



Any information would be useful!
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Old Nov 1, 2011 | 09:27 AM
  #2  
oil pan 4's Avatar
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From: High plains of NM
Car: 89 Firebird
Engine: L98
Transmission: T-56
Axle/Gears: 3.73
Re: carb V8 383

http://www.edelbrock.com/automotive_...ers_manual.pdf
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Old Nov 3, 2011 | 07:40 PM
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From: Long Island,NY
Car: Bone stock 1989 Iroc T-Top,1991 Z28
Engine: 5.7, Carbed 383
Transmission: 700r4, T-56
Re: carb V8 383

Cam,heads, intake?
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Old Nov 4, 2011 | 10:58 AM
  #4  
Reni-Camaro's Avatar
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Car: Camaro 1988
Engine: 305 14.5s 1/4mile
Transmission: T5
Axle/Gears: 2.73 LSD
Re: carb V8 383

Originally Posted by remltr
Cam,heads, intake?
224/228 на 0,50 1500-6500(LT4 Camshaft),Vortec 062 ,Summit AIR GAP Stage 3!
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Old Nov 7, 2011 | 01:01 PM
  #5  
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From: Hurlburt Field, FL
Car: 86 IRoc
Engine: 383 @ 505hp 530ft/lb torque
Transmission: TH350
Axle/Gears: 10 Bolt and 2.73
Re: carb V8 383

A Holley 600 should be more then adequate. My vote hands down.
I recommend mechanical choke vacuum secondaries,
http://www.holley.com/0-1850C.asp

For the distributor I would go with the 65k HEI
I recommend http://www.skipwhiteperformance.com/...x?Item=6500-GY

Last edited by 86InfidelIrocZ; Nov 7, 2011 at 01:05 PM.
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Old Nov 7, 2011 | 01:40 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
CID X maxRPM /3456 = required carb CFM for single plane intake. Add a little more for a dual plane intake.

That formula, using 383 CID and 6500 max RPMs, produces 720 CFM. So, go for 750 CFM.

Vacuum secondary carbs are for tow vehicles. If you put the package together properly, you won't have any problems with a double pumper carb.

The best thing you can say about Edelbrock carbs is they are shiny.
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Old Nov 7, 2011 | 01:51 PM
  #7  
86InfidelIrocZ's Avatar
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From: Hurlburt Field, FL
Car: 86 IRoc
Engine: 383 @ 505hp 530ft/lb torque
Transmission: TH350
Axle/Gears: 10 Bolt and 2.73
Re: carb V8 383

http://www.4secondsflat.com/Carb_CFM_Calculator.html

If you want to be accurate with it.

I'm running a 600 on mine. I'm 95% VE @ 5500 RPM (579.044 CFM).
I get ~500 hp and 530 ft/lb out of it. Worth every penny
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Old Nov 8, 2011 | 03:36 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It's still ballparking. It doesn't mention intake type, and, as already mentioned, you typically need a slightly larger carb for a dual plane intake than you do for a single plane intake.

Do you have a dyno sheet for your engine? Did you run side-by-side comparisons with different carbs on the dyno to optimize your combo?

As the link does state, engines are a compromise. What might give you the best ET on the drag strip may be a pain to drive daily.
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Old Nov 10, 2011 | 11:19 PM
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From: Long Island,NY
Car: Bone stock 1989 Iroc T-Top,1991 Z28
Engine: 5.7, Carbed 383
Transmission: 700r4, T-56
Re: carb V8 383

Originally Posted by five7kid
CID X maxRPM /3456 = required carb CFM for single plane intake. Add a little more for a dual plane intake.

That formula, using 383 CID and 6500 max RPMs, produces 720 CFM. So, go for 750 CFM.

Vacuum secondary carbs are for tow vehicles. If you put the package together properly, you won't have any problems with a double pumper carb.

The best thing you can say about Edelbrock carbs is they are shiny.
Agreed. Listen to five7, he is a Guru!
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Old Nov 20, 2011 | 03:50 AM
  #10  
Reni-Camaro's Avatar
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From: Ukraine
Car: Camaro 1988
Engine: 305 14.5s 1/4mile
Transmission: T5
Axle/Gears: 2.73 LSD
Re: carb V8 383

What can you say about the carburetor Speed Demon ?
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Old Nov 21, 2011 | 12:05 AM
  #11  
DeltaElite121's Avatar
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From: St.Louis, IL
Car: 1988 Camaro
Engine: 377
Transmission: TH350; Circle D 4200 converter
Axle/Gears: Ford 9"
Re: carb V8 383

Originally Posted by Reni-Camaro
What can you say about the carburetor Speed Demon ?
I've seen a ton of people complain about metal shavings from initial machining being down in the carbs from Barry Grant causing bad performance issues. I've also seen some that worked just fine. If I were to buy one, I'd inspect it thoroughly before bolting in it based on what I've HEARD - but I've never owned one personally. Anyone I know prefers Holley or Edelbrock over a Demon carb, but they are opinions. You may find that you like them, who knows.
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Old Nov 26, 2011 | 05:41 AM
  #12  
Reni-Camaro's Avatar
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From: Ukraine
Car: Camaro 1988
Engine: 305 14.5s 1/4mile
Transmission: T5
Axle/Gears: 2.73 LSD
Re: carb V8 383

Originally Posted by DeltaElite121
I've seen a ton of people complain about metal shavings from initial machining being down in the carbs from Barry Grant causing bad performance issues. I've also seen some that worked just fine. If I were to buy one, I'd inspect it thoroughly before bolting in it based on what I've HEARD - but I've never owned one personally. Anyone I know prefers Holley or Edelbrock over a Demon carb, but they are opinions. You may find that you like them, who knows.

They are better than Holly?
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Old Nov 30, 2011 | 11:53 AM
  #13  
Reni-Camaro's Avatar
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15 Year Member
 
Joined: Oct 2010
Posts: 97
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From: Ukraine
Car: Camaro 1988
Engine: 305 14.5s 1/4mile
Transmission: T5
Axle/Gears: 2.73 LSD
Re: carb V8 383

Originally Posted by 86InfidelIrocZ
A Holley 600 should be more then adequate. My vote hands down.
I recommend mechanical choke vacuum secondaries,
http://www.holley.com/0-1850C.asp

For the distributor I would go with the 65k HEI
I recommend http://www.skipwhiteperformance.com/...x?Item=6500-GY
this distributor good???
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Old Dec 5, 2011 | 06:56 PM
  #14  
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From: Arlington, Tx
Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: carb V8 383

ive seen some bad reviews about skip white performance, but i havent used them first hand. that being said, it looks like a good unit and for only $49, its a steal. id check out the vender review forum about skip white performance before commiting to buy though.
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