Speedo Compatability (GT)

[G54B-GT]

I am looking for a replacement speedo for a 72 GT Automatic, does anyone know if this one will work......
"i have a goodx working speedo it has a w=897 # "

[sawdust]

Originally Posted by G54B-GT I am looking for a replacement speedo for a 72 GT Automatic, does anyone know if this one will work...... "i have a goodx working speedo it has a w=897 # "

I got a 72 Automatic. I will check out the w= ??? tomorrow morning.
Unless someone else has the answer before then

[G54B-GT]

Thanks! I would really appreciate it!

[GTJIM]

W = 897 speedo is listed for manual trans only

W = 1062 is the one for both manual and auto trans.

W = 1020 is for the 1.1L model

Opel refer to the 'W' as "way speed" - it is the number of turns the speedo cable makes per mile travelled.

[G54B-GT]

Originally Posted by GTJIM W = 897 speedo is listed for manual trans only W = 1062 is the one for both manual and auto trans. W = 1020 is for the 1.1L model Opel refer to the 'W' as "way speed" - it is the number of turns the speedo cable makes per mile travelled.

Thanks very much!!That is exactly what I needed to know!

[sawdust]

What they say is true.
My 4 speed has a W=1062
My Auto also has a W=1062

I also have a spare W=1062

[P.J. Romano]

Just bought one on German eBay (in kilometers). It shows W660 on the back. Interesting...

[CDN OpelNut]

Here is a thread on speedo info

http://www.opelgt.com/forums/1e-othe...eedometer.html

[P.J. Romano]

Originally Posted by P.J. Romano Just bought one on German eBay (in kilometers). It shows W660 on the back. Interesting...

Just figured it out:

For the speedometer showing miles W=1062
1 mile = 1609 m
1 km = 1000 m

1062:1609=X:1000
X=(1062*1000)/1609 = 660

My W660 speedometer will work fine with the existing drive gear.

Now why all this trouble? Because we are using kilometers in Canada, not miles. And because the car with the speedometer showing 240kmh looks sooo much better than the one showing 150mph!

[G54B-GT]

Originally Posted by sawdust What they say is true. My 4 speed has a W=1062 My Auto also has a W=1062 I also have a spare W=1062

Care to part with it??
What condition is it in?

[kwilford]

Originally Posted by G54B-GT I am looking for a replacement speedo for a 72 GT Automatic, does anyone know if this one will work...... "i have a goodx working speedo it has a w=897 # "

So, what is a "w=897" speedo for?

[GTJIM]

Originally Posted by kwilford So, what is a "w=897" speedo for?

The best I can work out is that for the earlier 1969-70 GT gearbox with the angle drive gizzmo for the speedo cable on the g/box ... must have a different speedo drive ratio. The later auto and manual boxes use the 'blue' plastic gear - I think the earlier ones use the 'red' plastic gear.

[sawdust]

Originally Posted by G54B-GT Care to part with it?? What condition is it in?

Looks good to me. I have no Idea what it is worth..
also have the tach and other gauges that look good.

[G54B-GT]

How bout $20 plus shipping??

[sawdust]

sounds good.