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5.4 vs. 5.7

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  #1  
Old 12-12-2003, 02:06 PM
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5.4 vs. 5.7

So how would you all compaire the new Hemi to the 2004 5.4L Triton
 
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Old 12-12-2003, 02:45 PM
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High winder that doesn't make as much torque as they claim. Doesn't belong in a truck. The new 3V 5.4 is about as close to perfect as a true truck engine comes. Tons of torque from off idle basically to redline. A bunch of hp, too.
 
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Old 12-12-2003, 04:38 PM
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Originally posted by bigsnag
High winder that doesn't make as much torque as they claim. Doesn't belong in a truck. The new 3V 5.4 is about as close to perfect as a true truck engine comes. Tons of torque from off idle basically to redline. A bunch of hp, too.
I have yet too see any proof of this. Show me the torque curves of BOTH and we will see. The hemi does make 45 more HP, which is a big difference.
 
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Old 12-12-2003, 07:40 PM
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But to make that HP it has to rev 400 RPM higher than the 5.4. Don't get me wrong, I respect the Hemi, but it's not God's gift to the truck world. It does have more torque at all RPM's than the 5.9 it replaces and it was no slouch. It does make one heck of a good stoplight to stoplight truck, but for the heavy hauling I would choose the 5.4. I have seen a torque graph on a 5.4 and the flatness is very impressive. It was a very rough graph but it looked to be within 5 ft-lbs of its max for a very broad range.
 
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Old 12-12-2003, 09:10 PM
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I really don't believe that the HEMI is all that it is cracked up to be, in my latest Truck Trend they wrote something about the New Durango(yuck) with the HEMI, and i quote "doesn't feel like 345 horsepower". i know that it is not the same as the ram really, but that does tell you something. I would take the 5.4 3v over the HEMI anyday, no-matter what i wanted to use the truck for.
 
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Old 12-13-2003, 12:49 AM
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Originally posted by trucksforever
I really don't believe that the HEMI is all that it is cracked up to be, in my latest Truck Trend they wrote something about the New Durango(yuck) with the HEMI, and i quote "doesn't feel like 345 horsepower". i know that it is not the same as the ram really, but that does tell you something. I would take the 5.4 3v over the HEMI anyday, no-matter what i wanted to use the truck for.
For the regulars, I may sound like a broken record, but . . .

The Hemi in the Durango doesn't feel like 345 Hp because it isn't. Dodge de-rated it to 330 (or maybe 335) due to more restrictive induction and exhaust in the name of improved NVH.

The Dodge Ram HEMI does however come in at 345 Hp / 375 ft lbs. Our last thread on this topic (4000+ hits) went into detail about how the HEMI makes more torque than the 5.4L 3 valve at all speeds except perhaps 1000rpm where Ford apparently has a 2 ft lb advantage. Try to drive your truck at 1000 rpm, heck you'll pass 1000 rpm before the truck even moves in a spirited launch.

The fact that a two valve engine can surpass the specific output (power/displacement) of a three valve engine is a bit embaressing for Ford. It's a testament to the superior breathing ability of the HEMI. Perhaps you prefer the 5.4L because you like the extra 10 feet of timing chain, extra cam, valves, and more for less performance.

The 345 hp / 375 ft lb HEMI Ram truely dominates the F150. My long standing $100 bet still stands for anyone who wants to go head to head in the race of your choice (0-60, 1/4 mile, unloaded, fully loaded, etc.).

HEMI owns the 5.4L, waiting in Detroit . . .
 
  #7  
Old 12-13-2003, 01:33 AM
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Torque, if I owned a 3V 5.4, I would show you how wrong you are. You cannot seriously tell me the Hemi is a better pulling motor than a Triton. Have you ever pulled with a Hemi up a hill and then a new Ford truck? I guarantee you the Ford will come out on top. If you don't believe me, read the article on the homepage of this site with the first drive of the F-150, and pay attention to the towing section.

The Hemi is in fact the worst motor out of the major V-8s today. I would almost rather tow with the windy Tundra motor. I can't believe Chrysler dared call that motor a Hemi, and then stick it in a truck...
 
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Old 12-13-2003, 01:39 AM
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Do we see the 5.4 listed here?????

Wards top ten motors 2004

Audi AG 4.2L DOHC V-8 (S4)
BMW AG 3.2L DOHC I-6 (M3)
DaimlerChrysler AG 5.7L Hemi Magnum OHV V-8 (Dodge Ram)
DaimlerChrysler AG 5.9L Cummins 600 OHV I-6 turbodiesel (Dodge Ram Heavy Duty)
Fuji Heavy Industries Ltd. Subaru 2.5L DOHC turbocharged H-4 (Subaru WRX STi)
General Motors Corp. Vortec 4.2L DOHC I-6 (GMC Envoy)
Honda Motor Co. Ltd. 3L DOHC V-6 (Accord Coupe)
Mazda Motor Corp. 1.3L Renesis rotary (RX-8)
Nissan Motor Co. Ltd. 3.5L DOHC V-6 (Infiniti G35)
Toyota Motor Corp. 1.5L DOHC I-4 Hybrid (Prius)

Wards top ten for 03...

BMW AG 3L DOHC I-6
BMW AG 3.2L DOHC I-6
DaimlerChrysler AG 5.7L Hemi Magnum OHV V-8
General Motors Corp. 4.2L Vortec DOHC I-6
Ford Motor Co. 6L Power Stroke OHV V-8 Turbodiesel
Honda Motor Co. Ltd. 3L SOHC V-6
Honda Motor Co. Ltd. 2L DOHC I-4
Mini 1.6L supercharged SOHC I-4
Nissan Motor Co. Ltd. 3.5L DOHC V-6
Volkswagen AG 1.8L turbocharged DOHC I-4


Hmmmmmmmmmmmmmm.....................
 
  #9  
Old 12-13-2003, 02:10 AM
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Originally posted by hp&trq
Do we see the 5.4 listed here?????

Wards top ten motors 2004

Audi AG 4.2L DOHC V-8 (S4)
BMW AG 3.2L DOHC I-6 (M3)
DaimlerChrysler AG 5.7L Hemi Magnum OHV V-8 (Dodge Ram)
DaimlerChrysler AG 5.9L Cummins 600 OHV I-6 turbodiesel (Dodge Ram Heavy Duty)
Fuji Heavy Industries Ltd. Subaru 2.5L DOHC turbocharged H-4 (Subaru WRX STi)
General Motors Corp. Vortec 4.2L DOHC I-6 (GMC Envoy)
Honda Motor Co. Ltd. 3L DOHC V-6 (Accord Coupe)
Mazda Motor Corp. 1.3L Renesis rotary (RX-8)
Nissan Motor Co. Ltd. 3.5L DOHC V-6 (Infiniti G35)
Toyota Motor Corp. 1.5L DOHC I-4 Hybrid (Prius)

Wards top ten for 03...

BMW AG 3L DOHC I-6
BMW AG 3.2L DOHC I-6
DaimlerChrysler AG 5.7L Hemi Magnum OHV V-8
General Motors Corp. 4.2L Vortec DOHC I-6
Ford Motor Co. 6L Power Stroke OHV V-8 Turbodiesel
Honda Motor Co. Ltd. 3L SOHC V-6
Honda Motor Co. Ltd. 2L DOHC I-4
Mini 1.6L supercharged SOHC I-4
Nissan Motor Co. Ltd. 3.5L DOHC V-6
Volkswagen AG 1.8L turbocharged DOHC I-4


Hmmmmmmmmmmmmmm.....................
Top ten what? I certainly wouldn't put that dopey Renesis up there for power or reliability in its class. Stop making up excuses. The Nissan, Ford, and Chevrolet will all out-pull a Hemi and probably even get better mileage. Show me video or whatnot of Hemis outpulling other manufacturers.

Hmmmmmmmmmmmmmmmm.................
 
  #10  
Old 12-13-2003, 09:42 AM
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Torque,
First off Hemi's are not Hemi's. They are pent roof designs, with a combustion chamber that very similar in design to the OHC motors by Ford, Toyota, Honda and everyone else. They just happen to still use pushrods. Second, there is no way that they make as much torque as the 5.4L down low. Let's see that graph. Lets also remeber that the Ford is giving up what like 20 cubic inches? If Ford wnated to they could make a highwinder out of the 5.4, like the one in the Cobra R with 385 NA hp. That wouldn't be a very good truck engine though would it.
 
  #11  
Old 12-13-2003, 10:07 AM
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Isn't there a TSB on the Hemis for a stalling problem? Something to do with the ECU.
 
  #12  
Old 12-13-2003, 10:30 AM
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sad thing is, the new "hemi" isnt even a real hemi...
 
  #13  
Old 12-13-2003, 07:29 PM
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Originally posted by torque
For the regulars, I may sound like a broken record, but . . .

The Hemi in the Durango doesn't feel like 345 Hp because it isn't. Dodge de-rated it to 330 (or maybe 335) due to more restrictive induction and exhaust in the name of improved NVH.

The Dodge Ram HEMI does however come in at 345 Hp / 375 ft lbs. Our last thread on this topic (4000+ hits) went into detail about how the HEMI makes more torque than the 5.4L 3 valve at all speeds except perhaps 1000rpm where Ford apparently has a 2 ft lb advantage. Try to drive your truck at 1000 rpm, heck you'll pass 1000 rpm before the truck even moves in a spirited launch.

The fact that a two valve engine can surpass the specific output (power/displacement) of a three valve engine is a bit embaressing for Ford. It's a testament to the superior breathing ability of the HEMI. Perhaps you prefer the 5.4L because you like the extra 10 feet of timing chain, extra cam, valves, and more for less performance.

The 345 hp / 375 ft lb HEMI Ram truely dominates the F150. My long standing $100 bet still stands for anyone who wants to go head to head in the race of your choice (0-60, 1/4 mile, unloaded, fully loaded, etc.).

HEMI owns the 5.4L, waiting in Detroit . . .

Yes, i know that the HEMI in the Durango only has 335HP, but i quoted staight out of the magazine. i found this out after i made the post and did a little research on the subject. And i can't believe your willling to bet on the HEMI
 
  #14  
Old 12-14-2003, 09:14 AM
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I can't believe how you peopel believe the 5.4 is a stump puller. The 300 I6 is a stump puller, numbers are numbers, but my 2 valve 5.4 is way happier at high rpms. Bottom end feels LESS than my 300 6, while it really pulls above 3000 rpm.
Face it, the Hemi out everything the 5.4, 2V or 3V except for a 2ft lb advantage at 1000 rpm (big deal, i could push and make up the difference). What meks the ford better is the rest of the truck. It is a better truck, but Dodge has the better engine, and has always had better engines.
 
  #15  
Old 12-14-2003, 01:03 PM
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Where does this 2ft lb at 1000 RPM deal come from. Can someone show me a link or give me a source? Thanks.
 


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