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Unread 06-12-2007, 08:25 PM   #1
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Default F-150 Triton V8 5.4L RPM

...Any idea how "safe" the maximum RPM limit should be? I have had it up to 4,000 RPM a few times and don't really feel like blowing a gasket or seal. Anyone want to recommend a safe RPM limit?
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Unread 06-13-2007, 09:13 PM   #2
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As far as it lets you go, lol. I don't know of a newer motor that doesn't have a rev limiter. Others are just limited by airflow, fuel and timing. You won't blow a seal or anything, but if you rev it high enough when it isn't fully warmed up, you can damage the cylinder walls and such, which would reduce performance in the long run.
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Unread 06-13-2007, 10:07 PM   #3
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It has a rev limiter. I am pretty sure that it even has a neutral rev limit. That way if your car is automatic it will not let you try to do burnouts and destroy your automatic tranny.
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Unread 06-14-2007, 01:38 AM   #4
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I wouldnt take it past 5500... Most V8's top out around there if that much... Besides, redline will be way after your power band... so whats the point? Its a truck motor, its designed for low end torque.
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Unread 06-20-2007, 01:16 AM   #5
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hmm I don't know what to tell you but my silverado got up to 6k a few times pulling a car on the ice lol.

And it still runs fine.

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Unread 06-28-2007, 01:06 PM   #6
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Another question- Around 3.5K-4K RPMs, the battery light flashes. Any idea what's up?
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Unread 06-28-2007, 02:38 PM   #7
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Quote:
Originally Posted by Burn View Post
Another question- Around 3.5K-4K RPMs, the battery light flashes. Any idea what's up?
Maybe your belt is loose or your alternator is about to go bad...if you have the money, go get the electrical system checked...

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Unread 06-28-2007, 02:39 PM   #8
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I have heard my belt while idling have a faint squealing sound, perhaps that could be it :\
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Unread 06-28-2007, 09:39 PM   #9
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the belt should be tight enough that you shouldn;t be able to twist it much more than 180 degrees.
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Unread 06-28-2007, 09:43 PM   #10
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I have heard my belt while idling have a faint squealing sound, perhaps that could be it :\
might be that or could be the pulley or tensioner...my tensioner rattles/squeaks like no other...just don't have the money or will power to fix it, lol

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