My tach doesn't have a redline on it and I keep forgetting to ask the service dept. what redline is on my `99 5.4. Any ideas?

 

my fuel pump shuts off at 5000rpm with the stock program, however, after adding the Superchip(highly recommend it) my tranny shifts before it gets to it and I haven't held it in gear to see, but it should be at about 5200rpm (Superchip supposed to raise limiter ~250rpm higher).
so, i guess the answer to your question is 5000rpm as long as you have the stock ECM.