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V6 EFI - Carb 1st gen 350 swap

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Old Oct 1, 2024 | 09:10 AM
  #1  
MaazInfinite6's Avatar
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V6 EFI - Carb 1st gen 350 swap

I got a 1986 2.8 v6 700r4 firebird.

I am halfway through a computerless carb 350 swap (Pulled out of a 73 monte carlo), I have the engine in, mounted, and rad connected. I also got a v8 700r4, which is bolted and mounted.

Question is, will my dash work? I understand that theres no computer, and that the interior info lights wont work, but I want its core functions like the spedo/tach and basic info like oil pressure and temp to work. Would I be able to just yank a harness (firewall beyond) and connect it to my interior harness?

Last edited by MaazInfinite6; Oct 1, 2024 at 04:58 PM. Reason: Forgot to mention something
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Old Oct 1, 2024 | 09:17 AM
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T.L.'s Avatar
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: V6 EFI - Carb 1st gen 350 swap

If it was working with the V-6, it will work with the V-8 except for the tach. You need a V-8 tach. You don't need to yank any harness except for the ECM harness...
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Old Oct 1, 2024 | 09:22 AM
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MaazInfinite6's Avatar
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Re: V6 EFI - Carb 1st gen 350 swap

Im fine if the tach doesnt work on the dash, would I be able to jsut get an auxilary tach?

Last edited by MaazInfinite6; Oct 2, 2024 at 02:22 PM.
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Old Oct 3, 2024 | 12:07 PM
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midias's Avatar
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: V6 EFI - Carb 1st gen 350 swap

You could but I would just get the factory one working and modify it for a V8
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