Speedometer Gear Ratio Adapter 6476736

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Originally Posted by luv2sixty9

Bill,
I have a 736 that I thought I didn't need, but according to your chart it indicates that I do. Now I'm confused. My 68 Z has 410 gears and E70-15.

According to my chart attached below it appears that I don't need an adapter. I would like to help you out but I want to make sure I don't need it. Dave

As long as your driven gear is the orange 25 tooth 3860348 is should work according to that 68 chart. The 69 chart I posted says you need the adapter. I never considered the gauge itself differed mechanically between 68 and 69 but maybe that's why the difference in the two charts.