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mechanical speedo on T56

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Old Apr 3, 2005 | 05:02 PM
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Default mechanical speedo on T56
has anyone modified tail shaft housing for mechnical speedo? Are there vendors who do this? thanks
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Old Apr 3, 2005 | 05:05 PM
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www.jagsthatrun.com having the parts to do this.

If any sponsors do, feel free to edit the link, but i have not heard of it offered elsewhere.

Ryan
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Old Apr 3, 2005 | 05:12 PM
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Careful doing this on an LS1. The PCM wants input from the VSS and it's used in logic for idle speed control, fan control, and possibly other loops. If you replace the magnetic VSS with a mechanical one, you'll need to generate a 40K pulse signal some other way.

The JTR conversion is great for fitting a T56 into an older car with correspondingly-old powertrain controls.
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Old Apr 3, 2005 | 05:15 PM
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how about having both. ie VSS for computer and mechanical for speedo?
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Old Apr 3, 2005 | 08:10 PM
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I'm using an Abbott Cable X converter box. It's a lot cheaper than swapping the tailshaft.
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Old Apr 3, 2005 | 11:16 PM
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I heard the covetrs don't work that well ie The response time of the servo motor results in a lag and a non natural sweep of the needle. Thats why I was looking at mechanical option
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Old Apr 3, 2005 | 11:21 PM
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Originally Posted by dsrour
I heard the covetrs don't work that well ie The response time of the servo motor results in a lag and a non natural sweep of the needle. Thats why I was looking at mechanical option
I've never heard that. If true, it can't be any worse than a factory F-body tachometer. Those things really suck.
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Old Apr 4, 2005 | 09:01 AM
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Originally Posted by Mark IXZD 150
I'm using an Abbott Cable X converter box. It's a lot cheaper than swapping the tailshaft.
That's what I've got , too.
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Old Apr 4, 2005 | 09:05 AM
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Originally Posted by Mark IXZD 150
I'm using an Abbott Cable X converter box. It's a lot cheaper than swapping the tailshaft.
Where can I find one of those at? I'm about to be needing one.
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Old Apr 4, 2005 | 10:04 AM
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Originally Posted by LS69TA
Where can I find one of those at? I'm about to be needing one.
http://www.abbott-tach.com/cablex.htm
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Old Apr 4, 2005 | 04:50 PM
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Thanks.
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