Speedo fix after gears?
Champion
Joined: Sep 2012
Posts: 4,868
Likes: 434
From: Central VA
https://transmissioncenter.net/shop/...dometer-gears/
Thread Starter
|
Veteran
Joined: Mar 2011
Posts: 327
Likes: 0
From: Spokane, WA
Again, see the link here - it clearly states the answer to your question.
https://transmissioncenter.net/shop/...dometer-gears/
https://transmissioncenter.net/shop/...dometer-gears/
Record Breaker
Joined: Sep 2015
Posts: 1,552
Likes: 4
Looks like a 37 tooth...
R&P / Tire 38″ 37″ 36″ 35″ 33″ 32″ 31″ 30″
5.13 38 39 40 41 43 45 46 48
4.88 36 37 38 39 41 43 44 46
4.56 34 35 36 37 39 40 42 43
4.11 31 32 33 34 36 37 38 40
3.73 27 28 28 29 31 32 33 34
3.55 – – – – 31 31 32 33
Sorry, it didn't cut-and-paste right.
R&P / Tire 38″ 37″ 36″ 35″ 33″ 32″ 31″ 30″
5.13 38 39 40 41 43 45 46 48
4.88 36 37 38 39 41 43 44 46
4.56 34 35 36 37 39 40 42 43
4.11 31 32 33 34 36 37 38 40
3.73 27 28 28 29 31 32 33 34
3.55 – – – – 31 31 32 33
Sorry, it didn't cut-and-paste right.
Last edited by dbbd1; Dec 24, 2016 at 07:47 PM.
Veteran
Joined: Sep 2012
Posts: 464
Likes: 4
Easiest way to do it is to take the original speedo gear out and see how many teeth it has. From there it's just a ratio between your indicated speed vs. GPS at any given time (highway for example), so
(new speedo gear teeth #) = (indicated speed) / (GPS speed) x (old speedo gear teeth #)
For me I went from 3.55 to 4.56, stock tires to 35". 30 tooth stocker and a 36 tooth replacement is dead nuts on. These ratio charts will screw you up more than anything.
(new speedo gear teeth #) = (indicated speed) / (GPS speed) x (old speedo gear teeth #)
For me I went from 3.55 to 4.56, stock tires to 35". 30 tooth stocker and a 36 tooth replacement is dead nuts on. These ratio charts will screw you up more than anything.
