Speedometer calibration after 4.11 swap

[pavanbabut]

Originally Posted by lee

Could someone explain how this error could happen by a swap?

My understanding of the speedo setup is that a gear is driven from the right side axle, which in turn does some magnetic signaling that gets decoded and sent on to the speedometer.

My point is the speedo, since it's driven by axle revolutions, should register exactly the same (good or bad) before & after, regardless of the ratio installed.

So, which automotive class do I need to take over again?

same here toooo... not able to understand... maybe Tom[svxfiles] can explain this clearly as he is the master in swaps 4.11 and 4.44.

-Pavan.