white smoke is oil burning in combustion chamber. sound like this one has been ran very hard and will have many probs.
changing the gears in a rear will mess up your speedometer. you need to reset the computer through a hypertech power programmer or some equivalent programmer.
Gearbox oil needs changing.
get a new trany or rebildit cuz its going out unless the knocking is from moter it might be timing
That is one of many possible causes.
3.23's
A transmission that causes the RPMs to increase without changing gears could be in need of fluid. If that does not fix the problem, it may be the car needs a new transmission. For safety reasons, it is imperative the car is taken to a trained mechanic to be diagnosed properly.
Changing the gears on a lathe enables it to cut certain pitches of threads.
3.42 should be stock.
I believe they are 3.42.
the clutch or clutches in the transmission are bad,even if changing the tranny filter helps the forward gears will not be right and quit again
2.73 gears
If it's like other Fords, the synchros break down, preventing the transmission from changing gears. Getting a manual transmission should avoid this problem.