Reply To: Flathead to C4 conversion
Virgil & Sue Klein
The exact same thing happend to me when I converted to a C4. I took the car to United Speedometer in Riverside, CA (I lived there at the time). They made a gear box that mounted to the back of the speedometer head to get the proper (well almost) reading. It actually screws to the back of the speedometer head using a fitting like that on the end of the speedo cable and the speedo cable plugs into the other end. As I recall it was a bit noisy. I was looking for something the other day and happend across it. Interestingly, when I switched the car to a 5.0L with AOD the speedometer read pretty acurately with out the gear box. Give me a call at 402 461 6080 and we can visit about giving this a try.