hey guys any one know how to replace a speedo gear any input would be helpful thanks

 

The driven gear is easy - remove cable, remove clamp bolt, pull gear housing, put new gear in housing & reverse disassembly. Some gears use a different housing than others, so you need to know which housing the gear you're going to use needs.

The drive gear is a little more involved. You need to remove the tailshaft housing, remove a clip, and slide the gear off the output shaft.

On a '66 TH400, it's even more complicated, because the drive gear is pressed onto the output shaft...

 

thanks for the input, the manual i have did not cover the subject very clearly

ps: you are the only other person from colorado i have seen on these boards, do you ever go to bandimere?

 

https://www.thirdgen.org/techbb2/for...?s=&forumid=30

I do Bandimere in the Friday evening and Saturday ET classes, but in the '57.

 

I'm on here quite a bit. Where are you from? I have been known to go to Second Creek, but this year I'm going to try to get up to Bandimere to get some hard numbers.

 

Yes, I have done it all. Speedo gears on both manuals and autos with both a VSS and cable driven. Yours is cable obviously. On the T-5 it is easier if you take the tranny out. You have to remove the tail shaft of the ranny. You will be basically taking it apart in half and all the oil will come out when you do this. Then the little plastic gear is just on the output shaft held by a little metal clip. There is a metal ring around the end of the output shaft where the driveshft is, it is kind of hard to take off but it will come off. The easiest way to get both the ring and the gear off is to use a big open end wrench or an adjustable wrench against the sides of the gear then lightly tap on the wrench and "press" it off. The same to install it. Then just swap the little plastic gear that goes into the cable housing thing that the cable screws into.

 

Oops, I missed the "T5" part for the drive gear...

 

thanks guys for the t-5 input I will need it soon when I get a new speedo and speedo gears. I guess I did not ask about what tranny it was for but originaly the question was for a th700r4 my friend has a 89 iroc and I was not sure if it would be the same as my tranny. But thanks for all the help guys

Ps: I live in Westminster/ Arvada area and have not got my Z to the track yet so I have no idea what I run in the 1/4 but want to get up there soon. also gta-spd do you live near dacono/ firestone?

 

Yep. First street North of 52. You familiar with the area? I actually grew up in Erie. Lived in Thornton for a while. Back to Erie. Then Longmont and now Frederick. The next stop is going to be Vegas or Northern Arizona.

 

I feel better now.

Add about 7.25% to the ET other people get with a car similar to yours as a baseline for what to expect the first time you take your car to Bandimere. It's that altitude thing.

 

I worked in longmont for a mattress company for a while and a friend of mine lives in dacono