LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Trying to get this speedo done

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Old 03-31-2013, 07:22 PM
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Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
Trying to get this speedo done

I have a wierd setup.

my real question is.
Does the ls1 t56 vss output the same way the lt1 t56 does?

I have a lt1 but am using a ls1 t56 so the vss might be different.

my pig tail to hook the vss up should be here any day so I can get that soldered on and be ready to test it.

How its hooked up now.

vss feeds to lt1 pcm via purple and yellow wires.
LT1 pcm speedo output feeds to a gray wire that goes to the dash.

I just wanted to verify if this is correct.
Old 03-31-2013, 07:26 PM
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Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: Trying to get this speedo done

Sounds like you have it hooked up correctly, far as I know the VSS output is the same between lt1 and ls1 6speeds
Old 04-06-2013, 05:17 PM
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Car: 92 Firebird
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Re: Trying to get this speedo done

It is the same 17ppr to the PCM which converts it to 4,000ppm the speedo can understand
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