Speedometer calibration with a 700R4 Trans

[Bruce88]

Originally Posted by 67ChevyRedneck

I didn't either. So 1,000 if for all 67-72 stock speedos? Where did you find that info?

I wish I had a answer for you and a manual to point to that has the specification data but there is none that I have available to me. I can say that by using the 1000 revolutions per mile in your calculations your speedometer will read correctly for a 67-72 Chevy truck. Most cars and trucks from 1965 and up use the 1000 revolutions per mile on mechanical speedometers.