Mechanical to electrical

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12-12-2018, 04:54 PM

Stevenmunoz

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Car: 1987 Firebird

Engine: 2.8L V6

Transmission: 700r4

Mechanical to electrical

I’m trying to instal a 140 dash in my car but mine is mechanica and the one I bought is electronic how do I convert this to work?

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12-12-2018, 05:04 PM

Drew

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Re: Mechanical to electrical

Start by doing a search. The thread is out there, you just have to find it. Maybe try Google and keywords like firebird speedo convert electronic.

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12-12-2018, 08:12 PM

Tuned Performance

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Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: Mechanical to electrical

https://www.summitracing.com/parts/dak-ecd-100-1/

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12-12-2018, 08:14 PM

Tuned Performance

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Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: Mechanical to electrical

Or use a Vss sensor with a Vss buffer or Dakota digital sgi-5

https://www.tpiparts.net/inc/sdetail/7587

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12-13-2018, 07:18 AM

naf

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Car: 1987 SC/1985 TA

Engine: 350/vortec/fitech

Transmission: T56

Axle/Gears: 3.27 9-bolt

Re: Mechanical to electrical

shouldn't an 87 firebird come with an electric speedo?

my understanding was that the electric speedo started in 86 on the firebirds, but of course I could be wrong...

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12-13-2018, 09:14 PM

Drew

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Re: Mechanical to electrical

The V6 idiot light cluster was still mechanical.

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12-14-2018, 07:49 AM

naf

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Car: 1987 SC/1985 TA

Engine: 350/vortec/fitech

Transmission: T56

Axle/Gears: 3.27 9-bolt

Re: Mechanical to electrical

Quote:

Originally Posted by Drew

The V6 idiot light cluster was still mechanical.

cool... Makes sense.

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12-17-2018, 06:40 PM

John in RI

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Car: 1984 Camaro Berlinetta

Engine: LT1

Transmission: T56 6-speed

Axle/Gears: 4.11 LS1 Rear End

Re: Mechanical to electrical

Going to have to install the yellow VSS Buffer box and get the correct electric VSS with the correct (electric) speedo gears in the tranny. IIRC the 87 Firebird dash harness is already wired for the electric speedometer and you just need to add the correct parts. However; I'm not sure if the 2 wires leading to the Tranny mounted VSS are included the engine bay harness,... so plan on needing to also add the tranny VSS plug and wires. ( I think they connect to the Buffer thru/at the C207 connector )