What's d approximate 1st, 2nd, 3rd gear rpm

[sagaboy]

For a stock 1300 single port and a 1600 dual port engine. What's the maximum RPM of the 1st, 2nd and 3rd gear while driving when the needle at speedometer indicates to change gear?

[Marc]

What transmission, and what tire diameter? Both front and rear tire sizes are relevant since the speedo's driven off a front wheel. Generally, 1200 and 1300cc -equipped cars come with a 4.375:1 ring & pinion and either a 1.32:1 or 1.26:1 3rd, while 1500/1600 cars have 4.125 or 3.875:1 R&P, 1.26 3rd, and .89, .88, or .93 4th => too many unknowns to give an accurate answer.
Also, what do you mean by "maximum"? Steady-state or peak when shifting? Either engine will rev past its horsepower peak, but the only reason to do so is to yield a higher RPM (and thus more power) in the next gear when you shift.

[sagaboy]

No need to be accurate, just approximately will do--to have an idea of the RPM when the needle is at the speedometer marking to indicate gear change required for the 1st, 2nd and 3rd.

Maximum? Meaning that; for example; when the car is moving in 1st gear and the speedo needle approaches the "Marking" to shift to 2nd gear--how much more RPM can we continue to push and drive on 1st?

[Marc]

No need to be accurate, just approximately will do...

The little red marks on the speedo (at approx 15/30/45+ mph) are about where you should shift in normal driving with a stock engine - you can exceed them considerably, especially with a modified engine, when accelerating onto the highway. You can feel when you've exceeded the horsepower peak at ~4400 RPM and the acceleration rate falls off, at that point you may as well shift up unless you're going up a steep grade. It's better to rev a little high rather than too low when under full load. The same horsepower is needed either way, but in the lower gear you'll have more cooling (and probably better oil pressure).
Unless you're going downhill, you shouldn't ever be in the higher gear much below the mark (for instance, if you're going less than 25 in 3rd or ~42 in 4th and need to speed up you should downshift to avoid lugging the engine - that's hard on the bearings and case.