Not wrong so much as just off the mark. It's all good. If you do not learn something everyday, then you are dead.
The speedo (and speedo gear) are reading revolutions at the output shaft. What the Heep does not know is how big your tires are and your gear ratios (in your diff). Now, if you change tranny gears, it would have no effect on the speedo.
The opinions of worthless people, are worthless.
The only problem that you have with anyone in this world, is what you expect of them.
Society is no match for a stupid person.
"Life Is tough but it is tougher when you are stupid"