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.

Original Quadrajet?

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Old

Mar 1, 2024 | 12:40 AM

#1

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Junior Member

Joined: Jan 2019

Posts: 11

Likes: 0

From: Prince George, BC

Car: 1986 IROC-Z

Engine: 305 LG4 Carbed

Transmission: T5 5-Speed

Axle/Gears: 7.5 10-Bolt 3.42

Original Quadrajet?

My carb is a 17084284. Did they ever put 1984 built carbs on a 1986 model year or is this likely not an original carb?

Old

Mar 1, 2024 | 06:49 AM

#2

Supreme Member

iTrader: (14)

Joined: Nov 2008

Posts: 2,108

Likes: 183

From: Milwaukee

Car: 92 Firebird, 77 Trans Am SE, 86 Z28

Engine: 5.7 HSR, T/A 6.6, empty

Transmission: T-5, TH350, T-5

Axle/Gears: 3.08 posi, 3.23 posi, 3.23

Re: Original Quadrajet?

An 84 carb on an 86 engine was likely a swap. Not impossible but I doubt there was 84 castings still stocked for the assembly line 2 years later.

Old

Mar 1, 2024 | 01:15 PM

#3

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iTrader: (1)

Joined: Sep 2005

Posts: 28,047

Likes: 2,504

Car: Yes

Engine: Usually

Transmission: Sometimes

Axle/Gears: Behind me somewhere

Re: Original Quadrajet?

Probably not original. Probably also not a whole lot different, esp since your car is a LG4.

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