Little transmission help

[Hugh Mongus]

This past weekend I installed a B&M trans in my truck. The instructions said I would need to install my speedo gear in the new trans, so I did. The speedometer is not registering at any speed. What did I do wrong? The instructions don't go into details, so I am a little lost.

Thanks in advance.

[Jurassic-1]

Did you look in the hole on the tailhousing and see if the gear is on the tailshaft. If it is not just remove the 4 bolts and take the clip off the old gear and slide the gear off. then reinstall it on the new transmission.

[davepl]

How about this one:

- Speedo didn't work with TH350 in car (from time I bought it)
- Speedo still didn't work after installing brand new TKO-600
- Speedo works if I turn it with a drill from the transmission end

So the speed mechanically works yet registered nothing from two different transmissions. Unless the internal cable is too short, but there was obviously enough to chuck it into a drill. I've never solved it. I suppose I need to have it hooked up to the trans and disconnected from the cluster and see if it turns while driving.

[Jurassic-1]

Sometimes the tip of the cable breaks off and it will be too short to turn speedo. If you do unhook it and jack up the truck you can touch the cable as it spins and see if it keeps going if it does it is a good chance the cable is just too short.