I'm running a 4R70w in my car, and using a digital gauge cluster. The gauges are pretty similar to the ones I had in the red car, and the speedo is calibrate-able based on pulse count coming off of the sender.
When I had the trans apart, I noticed that the output shaft was splined for what looked like a gear driven speedo sender, w/ a dedicated, plugged hole for that sender in the extension housing.
The reason I ask this is because I may want to use the gear driven speedo sender that came in the gauge kit as opposed to the internal sender already in the trans, and want to know if I can just go to Ford parts and get a gear for the sender. The last time I attempted to use this gauge cluster on a TR3650, the internal speed sender dealt the speedo fits, and I could never get it calibrated, but it worked perfectly when I had the gear driven sender on the T5 before that.
When I had the trans apart, I noticed that the output shaft was splined for what looked like a gear driven speedo sender, w/ a dedicated, plugged hole for that sender in the extension housing.
The reason I ask this is because I may want to use the gear driven speedo sender that came in the gauge kit as opposed to the internal sender already in the trans, and want to know if I can just go to Ford parts and get a gear for the sender. The last time I attempted to use this gauge cluster on a TR3650, the internal speed sender dealt the speedo fits, and I could never get it calibrated, but it worked perfectly when I had the gear driven sender on the T5 before that.