Speedo Ratio Box (or Adapter Box)

This section is for talk about anything to do with transmission or drivetrain.

Speedo Ratio Box (or Adapter Box)

Postby Johnno » Thu Oct 12, 2017 9:52 am

Hi Guys,

Wanting to install a Ratio Box (or adapter box as they are sometimes called) to compensate for a taller diff in the Lancer. The original diff was a 3.89:1 (I think) and the newer diff out of a Scorpion is close to 3.30:1.
At an indicated 80 kph on the speedo, the actual speed is closer to 90 kph.
Anyone know of a supplier of ratio boxes whose prices aren't exorbitant?
And anyone know the thread size on the speedo cable and the size of the square drive?

Posts: 18
Joined: Fri May 04, 2012 7:53 pm
Country: Australia (au)

Return to Transmission/Drivetrain

Who is online

Users browsing this forum: No registered users and 1 guest