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.

New carb, what else do i need?

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Old Apr 20, 2012 | 02:12 PM
  #1  
speeddemon86z28's Avatar
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Car: 86 Iroc-Z, 92 Firebird Formula
Engine: 350 carb, 305 TPI
Transmission: T5, T5
New carb, what else do i need?

First off, I would like to introduce myself. My name is Taylor. I have done a lot of reading for several months on this site without actually posting, this place is a gold mine of info. I have an 86 camaro z28 with the original 305 in it with a 5 speed. I am in the process of replacing some parts. Next up is the carb, I have a demon carb I am putting on it. Now for this carb, I understand this requires a new intake manifold (which I have) and mechanical distributor. I am assuming I will need a new coil as well. Or is there some way to make the existing one work. I am just making sure, this is my first carb car. I am just fixing this up to put it in my girlfriends camaro which was a v6 but the motor needs bottom end work. And i picked up an ls1 for my car for $200. (long story) So any help is greatly appreciated. I have done a lot of reading and people tend to tell people to keep the stock carb and not mess with it if it is working fine or to just rebuild it. I do not want to do this. Thanks guys.
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Old Apr 21, 2012 | 12:27 AM
  #2  
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
Welcome aboard thirdgen.org.

The large cap HEI distributors used the same cap, rotor, and coil whether computer controlled, or vacuum/mechanical advance. So, if you find a vacuum/mechanical advance distributor, your existing coil will work.

Of course, the factory coil is one of the weak links in the ignition system, and a new better aftermarket coil is less than a new distributor, but, it will fit...
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Old Apr 21, 2012 | 12:55 AM
  #3  
speeddemon86z28's Avatar
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Joined: Mar 2012
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Car: 86 Iroc-Z, 92 Firebird Formula
Engine: 350 carb, 305 TPI
Transmission: T5, T5
Re: New carb, what else do i need?

So are you saying I could change my existing coil and leave the factory computer controlled distributor?
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Old Apr 21, 2012 | 01:33 AM
  #4  
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: New carb, what else do i need?

No, if you use the Demon, you have to change the distributor.
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Old Apr 21, 2012 | 10:38 AM
  #5  
speeddemon86z28's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2012
Posts: 18
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Car: 86 Iroc-Z, 92 Firebird Formula
Engine: 350 carb, 305 TPI
Transmission: T5, T5
Re: New carb, what else do i need?

Okay, that is what I thought. Alright thanks guys that clears it up perfectly for me.
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