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12-12-2013, 01:34 AM | #1 |
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First year for xtra speedo digit
What year did the extra digit on the odometer start?
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12-12-2013, 01:56 AM | #2 |
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Re: First year for xtra speedo digit
I believe it was at the same time they went to the electric (instead of cable driven) speedometers ... 1990 & 1991 R/V series.
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12-12-2013, 01:58 AM | #3 |
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Re: First year for xtra speedo digit
It was in 1990 they started doing that on the R/V series trucks. Already the C/K series (88-98) had the extrab digit.
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12-12-2013, 02:02 AM | #4 |
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Re: First year for xtra speedo digit
My 83 has a 6-digit odo but I know my speedo has been replaced...twice I think. I've seen several mechanical 6-digit odo speedos.
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12-12-2013, 10:23 AM | #5 |
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Re: First year for xtra speedo digit
It was at least 85, maybe before.My 85 has 6 digits & it's original speedo.
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12-12-2013, 11:00 AM | #6 |
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Re: First year for xtra speedo digit
My 86 C10 has it's original 6 digit speedo. I also have an 85 C60 speedo with 7 digits.
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12-12-2013, 01:07 PM | #7 |
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Re: First year for xtra speedo digit
Is there a difference from miles vs kilometers?
I'm only aware of the 1/2, 3/4 ton pickups, Blazers, Suburbans having 5 digits (no 100,000 number) up to 1989. And then 1990 on up had the extra digit. This goes for the R/V series in the 89-91 era.
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12-12-2013, 01:15 PM | #8 |
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Re: First year for xtra speedo digit
No. Within the specific cluster housing there is no architectural difference; only labeling and calibration.
K
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12-12-2013, 01:36 PM | #9 |
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Re: First year for xtra speedo digit
1985 C60 speedo, cable drive type.
Not sure if all big trucks of that era had them. |
12-12-2013, 05:53 PM | #10 |
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Re: First year for xtra speedo digit
My Suburbans were
my 87 i believe was 5-in kms 88 is 5- in miles 89 is 6-in kms I used the 87 cluster for quite a while was plug and play
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12-12-2013, 08:01 PM | #11 |
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Re: First year for xtra speedo digit
Doing some research on this and it appears that the years were all over the place. I would have thought there would be a specific year this took effect but appears not to be.
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12-12-2013, 08:18 PM | #12 |
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Re: First year for xtra speedo digit
[quote=MalibuSSwagon;6414800]1985 C60 speedo, cable drive type.
Well, I've got to say that I certainly learned something new from this thread As I posted above, I always thought they added the extra digit when they went to electric speedometers. After seeing this one you posted, I took a look through my stash of spare parts. And sure enough, I found a couple of medium duty clusters with cable drive speedometers that have the extra digit in the odometer just like yours. They were both the 80's style 85 MPH speedometers. I have yet to see an older 70's style 100 MPH speedometer with the extra digit though. So there's a good chance that most (if not all) of the big trucks had the extra digit starting sometime in the early 80's. I'm still curious about the 1/2, 3/4, and 1-ton trucks though. I guess speedometer swaps (from medium duty trucks) could account for some of them. And I wouldn't be surprised if some dealer-installed GM service replacement speedometers had the extra digit too. |
12-12-2013, 09:03 PM | #13 |
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Re: First year for xtra speedo digit
not sure when, but I've wondered if we did the 6th first in Canada cause Km go faster then miles
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12-13-2013, 08:26 AM | #14 |
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Re: First year for xtra speedo digit
My 87 V20 has the 5 digit odometer.
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12-13-2013, 10:51 AM | #15 |
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Re: First year for xtra speedo digit
^^^ this is what I was thinking.
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12-13-2013, 08:22 PM | #16 |
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Re: First year for xtra speedo digit
my 88 v30 has the 5 digit. its been turned over twice since i've owned it!
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