Correct speedometer cable length ?

[Bob NH]

I wonder if someone can tell me the correct cable length for 42-47 Ford pickups ? Not sure the one in it now is right ?

 

[Gary in La.]

As per the Green bible parts catalog it is 55 inches.

The casing sheath length is 54 inches.

 

[ford38v8]

Cable length is critical only in relation to the sheath it runs in. Too short obviously wouldn’t engage, but also, just 1/8” too long within the sheath will bind and kink up. Ask me how I know.

 

[Bob NH]

Thank u guys, appreciate the info. I have to check as it looks like the currently installed one is too long.