Stock speedo drive gear

[nos4gn]

I am looking for information regarding the color and number of teeth of a stock speedo drive gear for the 86-87 Vin 7 Turbo Regal with 200-4R trans and 3.42 rear gear ratio.

TIA; Glen

[pdzz]

I've got one and it is blue, not sure how many teeth though.Need one??

[Keller]

Sadly, there was an article linked from this site to a page Dave Williams had that I think had info on the speedo gears and colors. Looks like the page has moved. Have to work on tracking that down.

Digging into our archives...
http://www.ajlc.waterloo.on.ca/cgi-bin/SFgate?language=English&verbose=1&listenv=DL&application=gnttype&convert=Mail&converthl=&refinequery=&formintern=&formextern=&transquery=speedo%20and%20gear&_lines=&multiple=0&descriptor=local%2f%2fhome%2fhttpd%2fwais%2fwais-sources%2fgnttype%7c712%7c412%7c%20%20%20randall%2 0Re:%20speedo%20gear%7cTEXT%7clocalhost:0%7c%2fhom e%2fhttpd%2fwais%2fwais-sources%2fgnttype%7c0%20412%20%2fhome%2fhttpd%2fWW W%2fgnttype%2f199707%2f119
http://www.ajlc.waterloo.on.ca/cgi-bin/SFgate?language=English&verbose=1&listenv=DL&application=gnttype&convert=Mail&converthl=&refinequery=&formintern=&formextern=&transquery=speedo%20and%20gear&_lines=&multiple=0&descriptor=local%2f%2fhome%2fhttpd%2fwais%2fwais-sources%2fgnttype%7c656%7c781%7cCraig%20Wats%20Re: %20Re:%20speedo%20gear%7cTEXT%7clocalhost:0%7c%2fh ome%2fhttpd%2fwais%2fwais-sources%2fgnttype%7c0%20781%20%2fhome%2fhttpd%2fWW W%2fgnttype%2f199812%2f1753

[nos4gn]

Thanks Scott,

I would appreciate whatever you can find out. Glen

[Keller]

Have you checked those links? Pretty sure your answer is right there. The 2nd one has color, GM part number, and teeth.

[nos4gn]

Hello Scott,

Thanks for the links. As I understand it, there is a speedo driven gear and a speedo drive gear. The second link is correct in that the speedo driven gear is a blue 30 tooth. I did some further checking and found out that the stock speedo drive gear for a TR w/200-4R trans and 3.42 rear gear is an orange 11 tooth which has been discontinued and is no longer available from GM. Wouldn't you know it, thats the gear I am looking for.

From time to time, someone asks me what speedo gear combo they need to keep the speedometer reading accurate when they change their rear gears. I wonder if there is some kind of chart that shows the speedo drive and driven gear/rear gear application combinations for TRs. I am sure if there is such a chart, it would be a great asset to have on this forum.

I will keep looking on my end and will be sure to let you know if I find such a chart.

Thanks again for your response; Glen

[Keller]

http://www.tciauto.com/Products/TechInfo/speedo_gears.asp#2004R
http://www.tciauto.com/Products/components/speedometer_gears.asp#gm-driven

I'll get these linked up shortly.

[nos4gn]

Excellent work Scott! :tup: Just what the doctor ordered.

Thanks for your help; Glen