Zany28
Member
Does anyone know where this goes? I know the speedometer cable hooks to it, but I didn't label it well and have no pictures. How is it mounted? Thanks for any help!
speedometer box
- Thread starter Zany28
- Start date
It goes between the transmission and speedometer cable.
Zany28
Member
Jodi
Veteran Member
- May 22, 2019
- 1,097
Yep... It should just screw directly to the transmission.
That is a "speedometer ratio adapter" box. The ratio should be stamped on a cast pad for such. Possibly an identifying letter code, too.
The speedometer cable attaches to the male end.
I don't recall on if it was the input or output side of the box, BUT a thin opaque-white plastic sleeve will slide into the one end, with a longitudinal tang on it. Then the squared-end of the cable slides into that before the outer nut is tightened. That little sleeve is a more secure way of keeping the cable secured so it will not turn (from wear) in its mating-piece. So if the cable end does not match the adapter box receptacle, you need one of the plastic sleeves. They were available in GM parts back then and in the Chevy parts book. Usually came 10 to a package.
Without that obscure sleeve, nothing works. In some cases, the sleeve is not needed as the "mating part" has the longitudinal tang made into the metal mating part.
Just some thoughts,
FS87LT
The speedometer cable attaches to the male end.
I don't recall on if it was the input or output side of the box, BUT a thin opaque-white plastic sleeve will slide into the one end, with a longitudinal tang on it. Then the squared-end of the cable slides into that before the outer nut is tightened. That little sleeve is a more secure way of keeping the cable secured so it will not turn (from wear) in its mating-piece. So if the cable end does not match the adapter box receptacle, you need one of the plastic sleeves. They were available in GM parts back then and in the Chevy parts book. Usually came 10 to a package.
Without that obscure sleeve, nothing works. In some cases, the sleeve is not needed as the "mating part" has the longitudinal tang made into the metal mating part.
Just some thoughts,
FS87LT
Zany28
Member
Thank you!
Zany28
Member
I do have that plastic sleeve on there, thanks!
Zany28
Member
a picture is worth a thousand words. I wish I took more during my tear down!
I have a fixation to take pics when I fix or replace parts. OCD maybe?
