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LT1 in a 86 IROC speedo question

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Old 08-08-2003, 04:11 AM
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Car: 86 IROC-Z
Engine: LT1....not running
Transmission: T-56
LT1 in a 86 IROC speedo question

I put the motor and the 6-speed in. My speedo is cable driven and the T-56 is electronic. What do I do to get it to work. Should I get a gauge cluster that is electronic from like a 90-92 or something. How would this work with wiring?

Thanks, FOO!
Old 08-08-2003, 11:15 AM
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Engine: LT1
Transmission: 700r4
remove the VSS sensor from the transmission, install your old speedo cable/gear.
Old 08-08-2003, 02:52 PM
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install your old speedo cable/gear
If only it was that simple....

JTR (Jags That Run) used to sell an adapter kit for hooking a cable drive up to a T-56, but they quit. It was about $300 IIRC. That might have something to do with it, maybe slow sales due to the $price$ kind of held the volume down too low.
Old 08-10-2003, 05:21 PM
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Car: 1990 Formula
Engine: 95 LT1
Transmission: T56
Axle/Gears: Weak 7.5 with 4.10s
I saw something in the Pace Parts catalog that was called a "cable x". It converts a speed sensor to cable somehow. There was a discussion on this a while ago. I think it was made by abbott something or other. A search will probabaly help you more.
Old 08-11-2003, 08:37 AM
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Engine: LT1
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ok I think the 93 was a question of removing the sensor and that was it, maybe it's different for newer T56
Old 08-11-2003, 03:46 PM
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Car: 1990 Formula
Engine: 95 LT1
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Axle/Gears: Weak 7.5 with 4.10s
I know on a 94 speed sensor there is no actual gear. It looks like an ABS wheel sensor. I am pretty sure it is some sort of magnetic signal.
Old 08-12-2003, 12:20 PM
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You will be better off converting to the newer dash cluster.
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