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

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Old 09-16-2009, 10:49 AM   #1
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92z28camarokid's Avatar
 
Join Date: Feb 2009
Location: Camdenton, Mo
Posts: 120
Car: 92 Z28 Primered yellow
Engine: sbc 350 5.7L TPI soon to be carbed
Transmission: 700R4 with tcc lockup
Axle/Gears: stock 3.23 or something or other

Classifieds Rating: (0)
LOTS OF QUESTIONS, Can you HELP me?

Hey everyone, I am switching my 92 camaro z28 with a 350tpi to a carb setup.
I already have an Performer RPM intake and a 4 barrel carb, and I am gettin a High Energy 268 Comp Cam for it and a pair of long tube heddman headers.

Alright here are my questions with the setup.
1. If I remove my comp and wiring harness will the gauges still work, also what else will I loose by taking it out?
2.How do I wire up a toggle switch for my trq convertor and when do I use it?
3.What is the best way to hook the carb up to my throttle cable?
4. I know I have more questions but I cant think of any now, I really just need information, I am a highschool student with a small budget, and I am doing the work myself and need some information.

Thank You
-Coltin
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Old 09-16-2009, 11:11 AM   #2
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Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 33,342
Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

Classifieds Rating: (3)
1. The gauges don't go through the computer harness. If you remove the ECM and ECM harness, you will lose the torque converter lock-up wiring, and the fuel pump power.

2. See the tech article linked from the thirdgen.org homepage.

3. Get a carb or TBI throttle cable from the dealer or junkyard (I have a carb throttle cable, but one lock tab is broken off). There are studs available to hook up the throttle cable to the carb throttle arm. You will also need a geometry corrector bracket to mount to the carb throttle arm for the transmission throttle valve cable.

4. Will answer when you ask. Or, maybe before (as in #3 above).
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Old 09-16-2009, 11:57 PM   #3
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Join Date: Sep 2002
Location: Cary, North Carolina
Posts: 2,505
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi

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Re: LOTS OF QUESTIONS, Can you HELP me?

Quote:
Originally Posted by five7kid View Post
... If you remove the ECM and ECM harness, you will lose the torque converter lock-up wiring, and the fuel pump power.
Slight correction:

You'll still have power to the fuel pump, through the oil pressure sending unit - it just won't prime first, which it doesn't need to since the carb has fuel bowls with plenty of fuel to start the car enough to get an oil pressure reading and start the fuel pump running.
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