C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Lt4 to L98 dash compatibility issues

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Old Mar 11, 2006 | 12:50 PM
  #1  
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Default Lt4 to L98 dash compatibility issues

Has anyone experienced a compatibility issue when installing a Lt4 dash into a L98.
I bought one recently and here is what it looked like when I installed it.



All the gauges worked correctly but as you see the digital dash part isn't quite up to snuff.
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Old Mar 11, 2006 | 08:23 PM
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If I remember right, f.member -=jeff=- did that I believe he also changed ccm........I like the way you think I was thinkin a zr cluster myself. It looks like it is hooked up.....gettin a little busy out there are you?

Last edited by mseven; Mar 11, 2006 at 08:28 PM.
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Old Mar 11, 2006 | 10:04 PM
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Yes the 90-91 LCD is different then the 92-96 LCD. The data stream coming from the CCM is different. The easy fix is taking the LCD out oif the 90-91 cluster and installing it in the 92-96 cluster. That is what I did on my 91 dash conversion. Works great.

Now when you first turnt he key everything lights normally but that is because the Blanking Contorl that does that is the same for both clusters..

I hope that makes sense
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Old Mar 12, 2006 | 04:34 AM
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Thanks Jeff, that was the answer I thought could be possible. I already did that. It does work, I was just curious if the cluster I bought had a puked LCD.


MSeven, yep, I put insurance on the car for the weekend. One thing the warm weather guys won't know is how good it feels to drive a car for the first 5-10 minutes every season. Friday was a good time. Today wasn't too bad either.
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