how many teeth are on the speedometer drive gear of my 700R4 transmission i am looking to order the gear to correct my speedo and i am not sure how many teeth it has. isnt it like 7or8?

 

No... it is not 7 or 8. You need to give us your setup info and we can calculate the speedometer gear set you need (probably gonna need to replace both).

Give us the following info:

Tire size: ###/##/R##

Rear gear ratio: 2.73? 3.43? 3.73? ????

 

my tires are 245/50/16 i have read that they equal 25.5 inches my rear end gear ratio is a 3.73 and i have a 1992 700R4 transmission

 

i mean the diameter is 25.5 inches

 

Do a search on this forum on my userID and the phrase "SMUC"; I give the formula for calculating the gears with any rear gears, tire size, etc.

The drive gear in the 700 has around 15-18 teeth, and the driven gears are in the 40-45 range. Work out the formula, go to the dealer with a few possibities that put you real close, and see what gear combos you can acutally buy.

 

With those specs, your closets gears will be 15 tooth drive gear with a 44 tooth driven gear.

If you are unsure of exactly what you need, just call these people and buy this kit: http://www.bowtieoverdrives.com/cata....php?ITEMID=14

It might be a couple more bucks, but it will save you aggrivation.

 

i read on a web site that the speedo gear was (ring gear ratio x 20.2) divided by tire size is this correct?

 

go to www.bowtieoverdrives.com They have a calculator to tell you exactly what you need. I got my speedo gear set from them and am completely satisfied.