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dhelm72
Dodge Dakota
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3/19/2003
10:36:15
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 Subject: Bought a Ram hemi..And I have good news
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Hi guys,
I just sold my 2001 Dakota and bought a 1500 ram quad cab 4X4 with a 5.7 hemi. I loved that Dakota. I only sold it because I tow a boat that weighs about 6000 lbs. loaded on the trailer and my poor Dak was hurting. Good news is that the ram with the 5.7 feels just about as fast as my 4X4 Dakota with a 4.7. So, if they ever offer a Dakota with a 5.7 it will fly! (minus 1200 pounds). The 5.7 has alot of torque. It feels faster than it really is because it throws your head back. It doesn't slow down much when you tow something heavy. Well, If they ever make a dak with a 5.7 and I sell the boat, I'll be the first in line.
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STS
Dodge Dakota
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3/19/2003
13:44:18
|  RE: Bought a Ram hemi..And I have good news
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The only problem I have with that motor is that the tourqe peak is way to high (4400 vs my 318's 3000 RPM peak) And also it seems a bet tourqe challenged. Becuase I know for a fact that a reworked 318 will produce 380 FTlbs at about a 100 HP increace.
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STS
Dodge Dakota
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3/19/2003
13:45:20
| RE: Bought a Ram hemi..And I have good news
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Hey I test drove a Ram 1500 Hemi equipt. And I loved that exaust note. Just not that much tourqe there at low RPMS.
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dakota31852
Dodge Dakota
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3/19/2003
17:58:30
| RE: Bought a Ram hemi..And I have good news
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The loss of low end torque is not just a HEMI thing... all new engines dodge, chevy, ford, etc are all high reving engines with a lack of low end, just the new design... best I can figure thats just the way they have to design these newer eninges to pass emmsions and still get the same amount of power out of a smaller engine.
TJ
dakota52318@toad.net
1992 Dodge Dakota 4X4
Long Bed, 318, 46RH Auto
DT Headers, Functional RamAir Hood
K&N FIPK, Flowmaster Muffler
Custom Throttle Body
MP Computer
15.74@87.59
4350lbs
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gary f
Dodge Dakota
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3/19/2003
19:50:14
| RE: Bought a Ram hemi..And I have good news
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If ya want torque, get a Cummins HO and stop whining.
Gary F
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Hersbird
Dodge Dakota
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3/19/2003
22:25:00
| RE: Bought a Ram hemi..And I have good news
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There is not a lack of torque at low RPM on the Hemi. Sure the peak is not until 4200 RPM but from the real dyno's I have seen there really is no "curve" to the torque curve at all. At the rear wheels it is above 300 ft-lbs from torque converter stall to RPM cutoff and that was on a 4x4 drivetrain. The truck feels that way as well, just a steady even pull. It actually doesn't feel as fast as my old R/T but when you look down and see how fast the speedometer is climbing it's pretty deceiving. The Ram is at about 4400 rpm in 3rd gear at 105 mph when the speed limiter kicks in, 105 in the Ram feels like about 85 in the R/T. The Ram actually doesn't make much more torque then the R/T but it definately makes it much sooner and longer. Here is what was said when the motor was in development:
"Torque is really the true measure of an engine's power. When comparing the two engines torque curves the superiority of the 5.7 is clearly evident. The 5.9 puts out a maximum of 335 lb. ft of torque at 3200 rpm. The 5.7 on the other hand puts 325 lb. ft at 1500 rpm. It continues to go up from there eventually hitting its peak out put of 360 pound feet at 4000 rpm. Heck, at a mere 1000 rpm the 5.7 delivers more than 300 pound feet of torque! These numbers translate to an engine which has plenty of pulling power and great highway characteristics, in other words . . . it's the perfect truck engine."
Since then it turned out that the Hemi made even more torque; 375 ft-lbs@4200 rpm. The electronic throttle is also cutting back momentarily on launches as well which feels like a bit of a bog, supposedly an aftermarket computer is already in development that takes away this 'traction control' feature and gives almost 40 more HP at peak! If Mopar deceides that this would cause to many warranty problems then Kenne-Belle, will have a computer that does similar things this summer, and you won't need to buy the whole supercharger to get the computer.
Bottom line there is no problem with having the peak torque at 4200 rpm when it makes 90% of that peak number at 1500 RPM, that just gives you a nice long pull! It's much better then having the peak at 2400 rpm and then having it disappear to nothing by 4200 rpm.
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