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  1. Classic Cougar Tech
    Does anyone know what drive gear the typical 1967 C4 came with? My speedo is always off by several mph. It's not a linear difference and the gauge reads slower than the car is actually going. When I'm in the city it's off by about 5 mph. Highway speeds it's off about 10 mph. This leads me to...
  2. Classic Cougar Tech
    Hello, My speedometer read fast (e.g. when going 60, it read 90), so I changed the 21 tooth speedometer gear to a 23 tooth. Nothing changed. The speedometer still reads the same as when I had the 21 tooth gear. Any ideas about what else might be wrong? I'm left scratching my head. Any help...
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