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Classic Instruments Releases Ford-O-Matic Pulse Generator Adapter

Classic Instruments is now offering a speedometer drive adapter for ’51-56 Ford-O-Matic transmissions. Due to the unique speedometer drive arrangement found in those transmissions, connecting an aftermarket speedometer was difficult. This adapter takes that special arrangement and converts it to the more common 7/8”-18 speedometer cable output to connect a mechanical cable or electronic sensor. The high-quality adapter is machined from steel and re-uses the original Ford-O-Matic drive gear for a simple installation. Find this part at

THE SIMPLE GOAL OF PERFECTION  Quality, Service and Value are not new to us. They have been our primary objectives for over 30 years. Even with most of our design work now being done with computers, we still put in all the time, effort, and love essential to designing a long-lasting, high quality product.  We Build it Better - or we don't build it. Each and every one of our gauges is designed, assembled and calibrated with pride and quality right here in Boyne City, Michigan. Our proudly "Made in the USA" products are designed and built for street rods by street rodders!


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