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 replacement

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Old Nov 27, 2007 | 11:00 AM
  #1  
egplain's Avatar
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From: Maine
Car: 1986 camaro z28
Engine: 5.0 liter
Transmission: 700R4
Carb replacement

I need to replace my carb but i dont know what the best replacement would be. I dont know much about carbs so i would appreciate any help in finding the right one for my car. Its an 86 Z28. Thanks for the help.
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Old Nov 27, 2007 | 11:22 AM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Carb replacement

If you're keeping the computer control, the only carb that will work is a stock one. Your carb can probably be rebuilt to fix whatever has made you decide that it needs to be replaced.
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Old Nov 27, 2007 | 12:42 PM
  #3  
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From: Maine
Car: 1986 camaro z28
Engine: 5.0 liter
Transmission: 700R4
Re: Carb replacement

What would happen if i got a carb that didnt use the computer control. And how could i go about not using the computer? Thank you.
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Old Nov 27, 2007 | 12:49 PM
  #4  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Carb replacement

Without input from the sensors on the carb, the computer would pout and refuse to control the timing.

To eliminate the computer, you'd need to replace the carb and the distributor, and wire up some means of controlling the torque converter clutch on the transmission.

The easiest way out would be to fix your factory carb.
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Old Nov 27, 2007 | 02:03 PM
  #5  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: Carb replacement

So, you can get a new quadrajet and HEI distributor for a 79 Camaro with a 305, or you can get a carb for your car.

You should really consider either rebuilding your carb or replacing it with an exact match. The computer system works well in cars like yours.

By the way, what makes you think the carb is bad?
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Old Nov 27, 2007 | 06:21 PM
  #6  
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From: Ontario, Canada
Car: 86 Trans Am
Engine: 385 Fast Burn
Transmission: 700R4 - stock (eep!)
Axle/Gears: Stock, will upgrade at some point
Re: Carb replacement

hehe! this sounds exactly like my post when I first joined here
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Old Nov 27, 2007 | 06:38 PM
  #7  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: Carb replacement

So?

What did you do? Help the guy out here...
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Old Nov 27, 2007 | 06:58 PM
  #8  
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From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: Carb replacement

Screw buying a replacement one, trust me get a HEI dist and a new bigger carb and youll save a lot of headaches not having to deal with computer bullshit.
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Old Nov 27, 2007 | 07:02 PM
  #9  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Carb replacement

What headaches are those?
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Old Nov 27, 2007 | 07:06 PM
  #10  
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From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: Carb replacement

All the headaches of not being able to tune your car, and damn sensors going out check engine lights etc. Yeah you can tune efi at home now adays but it requires a bunch of software/hardware (lots of money) and lots of knowledge about hard to learn stuff.

Much easier doing things the old way before computers came around
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Old Nov 27, 2007 | 07:12 PM
  #11  
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Carb replacement

You've never tried to tune a CCC carb, have you?
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Old Nov 27, 2007 | 08:00 PM
  #12  
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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
Originally Posted by Apeiron
You've never tried to tune a CCC carb, have you?
I have. Piece of cake.
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Old Nov 27, 2007 | 08:09 PM
  #13  
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From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: Carb replacement

had an 83 88 and an 85 monte ss. Not hard to tune no, i was talking about FI, you might as well get rid of the computer BS while your at it to make things easier and better. Same thing with emmissions crap
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Old Nov 27, 2007 | 10:45 PM
  #14  
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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
Originally Posted by Rayzor32
i was talking about FI...
Well, since this is the "Carburetor" forum. . .

Originally Posted by Rayzor32
you might as well get rid of the computer BS while your at it to make things easier and better. Same thing with emmissions crap
I'm afraid the only "BS" and "crap" is what you're spreading.
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Old Nov 27, 2007 | 10:48 PM
  #15  
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From: BUFFALO, NY
Car: '89 IROC-Z
Engine: 355
Transmission: 700r4 edge 3000 stall
Axle/Gears: 9-bolt 3.73
Re: Carb replacement

okay well yous dont even make any attempt to back anything of what your saying
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Old Nov 27, 2007 | 11:11 PM
  #16  
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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
Originally Posted by Rayzor32
okay well yous dont even make any attempt to back anything of what your saying
Originally Posted by Apeiron
You've never tried to tune a CCC carb, have you?
Originally Posted by five7kid
I have. Piece of cake.
Oh, but I did. My system is an '86, just like the originator's.

Don't paint with too broad of a brush. The CC carb is a fine street-performance system. The emissions equipment doesn't bother anything. Most problems people experience with computerized 3rd gens are due to ignorance.

Still waiting to hear why the originator thinks he needs a different carb.
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Old Nov 28, 2007 | 08:06 AM
  #17  
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From: Ontario, Canada
Car: 86 Trans Am
Engine: 385 Fast Burn
Transmission: 700R4 - stock (eep!)
Axle/Gears: Stock, will upgrade at some point
Re: Carb replacement

So?

What did you do? Help the guy out here...
Well, I could have said I did nothing at all - until recently - and that wouldn't have helped either. I'm not sure why there is so much angst, but five7kid seems to know what he is talking about.

In a round about sort of way, and as nice a way as could be done I was hinting at maybe doing a search for CCC's and he could see the threads on this topic. Or even look at the posts I have done to see what that thread said.

That being said, I'm in the process of swapping out my entire motor for another - and keeping the CCC IF it does not have limiters for my newer, larger engine.

I didn't feel the need to say any more since Apeiron already said what was needed to be done to remove the CCC. I just try to be light hearted and have a laugh once in a while, sorry if my post came across as being antagonistic - but I thought the would have hinted I was just saying something for fun.
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Old Nov 28, 2007 | 03:19 PM
  #18  
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From: Casselberry, FLA
Car: 88 V6 'bird/89TBI bird/85 T/A
Engine: 2.8/TBI/TPI
Transmission: V8 T-5/700R4 x2
Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt
Re: Carb replacement

I didn't mean it as antagonistic, I really wanted to know what you did...

The only thing I have ever done with CCC is remove and replace with older non-ccc carbs and replace 7 pin HEI with 4 pin/vacuum unit. I honestly didn't know they were tuneable. That's why I try to read these pieces when they come up. I don't have one now, but when I come accross one, I won't throw it under the bus immediately... I will give it a few good tries to make it a strong runner.
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Old Nov 28, 2007 | 08:15 PM
  #19  
five7kid's Avatar
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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
If you start with a lo-po LG4, you might need to replace the main jets for a 383. Other than that, set everything to spec, tune the secondaries just like a non-CC q-jet, maybe replace the stock module and coil with aftermarket, and it will do the rest of the tuning. That's the beauty of it - the primaries adjust themselves.
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Old Nov 29, 2007 | 06:47 AM
  #20  
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From: Ontario, Canada
Car: 86 Trans Am
Engine: 385 Fast Burn
Transmission: 700R4 - stock (eep!)
Axle/Gears: Stock, will upgrade at some point
Re: Carb replacement

I didn't mean it as antagonistic, I really wanted to know what you did...
Ah! Sorry, guess I'm not reading things in the right mindset these days.
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Old Nov 29, 2007 | 02:08 PM
  #21  
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From: Fl.
Car: 83 Trans Am / 96 Jeep XJ
Engine: 355 / 4.0 I6
Transmission: TH350 / Auto
Axle/Gears: 3.23 10-bolt / 4wd
Re: Carb replacement

Not hijacking thread, but, Quick Question- Does he have the same set up as my 84 Z28 w/ 305 and Rochester Quadrajet? Thanks!
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Old Nov 29, 2007 | 02:36 PM
  #22  
five7kid's Avatar
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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
I believe the '86 ECM was different from '84. '86 had knock sensor, electric cooling fan, and flat-top pistons, '84 would only have those if L69.

Otherwise, though, the systems are pretty much the same.
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Old Nov 29, 2007 | 04:20 PM
  #23  
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From: Fl.
Car: 83 Trans Am / 96 Jeep XJ
Engine: 355 / 4.0 I6
Transmission: TH350 / Auto
Axle/Gears: 3.23 10-bolt / 4wd
Re: Carb replacement

So, I wouldnt be safe to just swap the carb either? I have an LG4.
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Old Nov 30, 2007 | 01:21 AM
  #24  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Carb replacement

Unless you live in Canada, your carb is computer controlled too.
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