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Author Topic: Speedometer  (Read 2395 times)

Offline gharris79

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  • Posts: 76
  • Chevy Freak
Speedometer
« on: April 11, 2013, 10:07:52 am »
Does anyboy have a idea which speedometer gear i should have in my 87 2wd? I have a 700r4 in the truck and recently changed out my 3:08's for 3:42's. It's reading 30kms too fast when i checked it with my GPS.
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87 Chevy Silverado 2wd, 1990 Blazer, 2017 Honda Accord

Offline Stewart G Griffin

  • Senior Member
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  • Posts: 3324
Re: Speedometer
« Reply #1 on: April 11, 2013, 08:49:31 pm »
The dealer should have a chart based on your tire size and rear diff gear and should have one that will get everything correct.   Try several dealers if necessary if possible.

There might actually be a chart on the net, but i can't find it now.

If all that fails, read this thread:
http://forum.73-87chevytrucks.com/smforum/index.php/topic,3785.0.html

i'm very busy, we'll get back to you eventually.

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