It depends on the gear ratio but 1750 rpm would be good.
Check your universal joints for wear.
6000 rpm
It should be about 40 psi.
the idle is controlled by the computer should be about 700 rpm's
700 RPM
It should be idling at approximately 625 rpm while the engine is warm.
Use a GPS ^ posted by someone else What you want to do is drive with traffic and watch your tachometer. That is the RPM gauge, if your car has one. By marking the tach you can tell your approximate speed at any given time. You need to watch what RPM's you shift at, if you are in fifth gear cruising at 55mph then look at where your RPM's are... they will always be really close that in 5th gear at 55mph. You can then use that as an easy way to tell your speed with a broken speedometer.
It should be able to handle 5500 rpm without damage, but probably doesn't make much torque over 4500.
It is best to start at 8 degrees at 600 rpm for auto and 6 degrees at 800 rpm for manual. The total timing should be around 33 degrees.
800 rpms.
The 2006 Chevrolet Colorado's engine produces 175 hp @ 5600 rpm.
The 2010 Chevrolet Colorado's engine produces 185 hp @ 5600 rpm.