number of holes in output shaft

[RagunCajun]

I have a gen 2 viper spec t56 in my truck. My tuner needs to know how many holes is in the output shaft. We are trying to figure out why my speedo is off. Anyone know?

 

[ARRESTmeRed04]

Our trucks use the abs sensors for the speedometer, no where for a speed sensor on the transmission that I remember seeing?:dontknow:

 

[ZCx]

that would be the sensor on top of the rear end housing.

might be full of frog fur or larger pieces?

 

[RagunCajun]

that would be the sensor on top of the rear end housing.

correct.

The sensor works fine with my old tune. It's accurate. But i switched to an out of state tuner for personal reasons.

I am just curious what's the difference lets say between a gt500 trans(tr6060) and the gen 2 viper's. I'm sure it's just a simple plug in play variable that is off.