C4 Digital Cluster Displays

[Bill B.]

Looking for any input that folks have regarding the 84-89 lens display layouts. I know the general layout of the 84 display for the automatics (suspect the manual is identical?). The following discribes the 84 cluster:

-two digit perpendicular numerics and no upshift warning for tach layout

0 to 60

-three digit perpendicular numerics for speed layout 5 to 120

-all uppercase letters, perpendicular boxes and outlined sectional boxes

for the center display

For the 85 (or is it 86 or 87) and later models it appears to me that the orientation becomes "slanted" digital numerics, perpendicular fixed numerics, different shaped tach and speedo curves, upshift warning for the manuals on the tach, only two outlined sections and "kPa" versus "KPA" on the center display.

I would rather find the info here but can go to the Corvette Forum too. If you have an 85, 86, 87, 88 and/or 89 can you and help me out. Hopefully, I will be re-polarizing lens very soon and I just want to get all the combinations and differences fixed for each year.

[Jim T.]

Re: C4 Digital Cluster Displays

Try www.gordonkillebrew.com, he most likely has the answers.

[Bill B.]

Re: C4 Digital Cluster Displays

Jim, I bought Gordan's book several years ago and it is fairly simplistic. Tells you the basics to kinda help you BASIC troubleshot. He also will help by phone for a "fair" by the minute fee. I would rather get some "free" input from someone or somebody who just has to look at thier lighted cluster and compare to what I described. I have many broken lens but not sure of variants as to the years. I don't think there might be more than two? I am just trying to get reasonably, somewhat reliable info here rather than chase my tail looking for the various years on the road or at shows right now.

My interest is in refurbing/repolarizing unfractured sunburnt nematic lens and re-screening the display layouts. Thanks though.