5.4L HP rating
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Tuned
Joined: Nov 2003
Posts: 454
Likes: 8
From: CT
5.4L HP rating
2006 5.4 has 300HP, but it is at 5000RPM, if redline is 5250 or there about, is the rating really a usable rating?
I tow a 8500# 5th wheel and it gets me from point A to B, and I am satisfied with it's capabilities, but if I want to utilize all the HP to get myself up a hill, I would be just about redline...so is it a rather skilled advertising?
EDITED: I had come across this: http://knowhow.napaonline.com/redlin...yths-debunked/ and added some information on when the peak HP is near redline
I tow a 8500# 5th wheel and it gets me from point A to B, and I am satisfied with it's capabilities, but if I want to utilize all the HP to get myself up a hill, I would be just about redline...so is it a rather skilled advertising?
EDITED: I had come across this: http://knowhow.napaonline.com/redlin...yths-debunked/ and added some information on when the peak HP is near redline
Posting Guru
Joined: Oct 2013
Posts: 1,039
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From: NC
That's the nature of the beast. Jeremy Clarkson one time said he's driving the fastest car in the world, a 1.8 liter Toyota Corolla rental. In the Bugatti Veyron, sometimes you're using 15 horsepower, sometimes you're using only ten. This, you have 140 horsepower from the moment you start it up to the moment you crash it. Not really sure where I was going with this...
The 5.4 is a damn good engine. With routine maintenance, you should be able to use all the skinny pedal you want.
The 5.4 is a damn good engine. With routine maintenance, you should be able to use all the skinny pedal you want.
Fleet Mechanic
Joined: Oct 2017
Posts: 1,704
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From: Southwest Ohio
Horsepower is just a computed number derived by a mathematical formula. The horsepower rating, in my opinion, means nothing in regards to trucks. Torque, the rpm at where max torque is achieved, and the amount of torque “under the curve” is what matters.
Horsepower is important when you are working with an engine that is designed to run at the upper range of its usable rpm. IE- a race engine.
— Dave
Horsepower is important when you are working with an engine that is designed to run at the upper range of its usable rpm. IE- a race engine.
— Dave
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Tuned
Joined: Nov 2003
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From: CT
I know the 5.4 is a rather wimpy motor, and I am not looking to race, nor get to my destination at any speed as I am going to my camping destination and as such getting there should be just as relaxing as being there,,,
Usually tow in 6th (OD) or 5th 1:1 depending on terrain and headwind, but the 5.4 does wake up nicely when climbing or maintaining 3500RPM to 4300 (hardly ever need to rev higher than that...)
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Joined: Jul 2010
Posts: 12,052
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From: Media PA
Torque is at 3750, it was my understanding and might be wrong, it is the HP that gets me up to speed, it is the HP that keeps me going, Such that if I am on the highway doing 65, and am approaching a hill, I downshift (yup it's a stick) keep the RPM up to maintain speed which is the HP keeping me to speed.
I know the 5.4 is a rather wimpy motor, and I am not looking to race, nor get to my destination at any speed as I am going to my camping destination and as such getting there should be just as relaxing as being there,,,
Usually tow in 6th (OD) or 5th 1:1 depending on terrain and headwind, but the 5.4 does wake up nicely when climbing or maintaining 3500RPM to 4300 (hardly ever need to rev higher than that...)
I know the 5.4 is a rather wimpy motor, and I am not looking to race, nor get to my destination at any speed as I am going to my camping destination and as such getting there should be just as relaxing as being there,,,
Usually tow in 6th (OD) or 5th 1:1 depending on terrain and headwind, but the 5.4 does wake up nicely when climbing or maintaining 3500RPM to 4300 (hardly ever need to rev higher than that...)
Torque is much, much more important than HP in any typical road vehicle, especially in trucks that haul or tow. To simplify, torque gets things moving and climbs hills, HP is for top end speed. So it's torque and where it made that dictates the real world feel and performance the of road car or truck.
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