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Old 10-25-2006, 06:31 PM   #1
JQ-72
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speedo gear ??- Experts help!!

I need to know what speedometer gear (what number of teeth) is used with a TH400 and 3.08 gears. Someone told me that the internal drive gear is the same on all TH400's, but the speedo gear varies depending on application. Someone please help before I get a speeding ticket!!!
Joshua
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Old 10-25-2006, 07:27 PM   #2
LockDoc
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Re: speedo gear ??- Experts help!!

Joshua,

This thread might help.

http://67-72chevytrucks.com/vboard/s...eedometer+gear

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Old 10-26-2006, 07:20 PM   #3
JQ-72
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Re: speedo gear ??- Experts help!!

Brad, I'm interested. What was this gear removed from? Thanks
JQ
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Old 10-29-2006, 01:25 AM   #4
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Re: speedo gear ??- Experts help!!

http://novaresource.org/speedo.htm might help you.
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Old 10-29-2006, 01:46 AM   #5
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Re: speedo gear ??- Experts help!!

Here's another good one:

http://www.tciauto.com/Products/Tech...eedo_gears.asp
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Old 10-29-2006, 02:11 AM   #6
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Re: speedo gear ??- Experts help!!

Im running a 308 with a 400 as well. Tires are 29.5 in diameter and I have a 17 drive gear and a 39 driven gear.
Check the following sites
http://www.700r4.com/speedoCalc/speedocalc.shtml
http://www.bgsoflex.com/speedo1.html
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