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  #1  
Old 03-27-2012, 04:49 PM
bti2007 bti2007 is offline
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Does anyone know why the hemi in the 2009+ 1500s is rated with more hp/tq then the 2500s???
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Old 03-27-2012, 04:58 PM
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I'm guessing weight is the issue. not %100 on that though!
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Old 03-27-2012, 05:46 PM
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Maybe the MDS adds a couple ponies?
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Old 03-27-2012, 06:21 PM
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i am thinking some small tweaks and a different tune.
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Old 03-27-2012, 06:28 PM
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I'm on the Ram page right now doing a 1500 to 2500 shopping/specs comparison, they both say 383hp, where does it say one is more than the other?
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Old 03-27-2012, 06:33 PM
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OK...as I start digging more, there is at least one 1500 rated at 383hp, then most of the rest are 390hp. I dunno.
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Old 03-27-2012, 06:51 PM
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The 2500 might be tuned for more torque, did you compare the tq numbers?
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Old 03-27-2012, 08:19 PM
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Quote:
Originally Posted by Butter View Post
The 2500 might be tuned for more torque, did you compare the tq numbers?
Yea the 1500 is rated with 7 more ft lbs i think, I'm curious as to where the power is lost, I assume its the exact same motor?
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Old 03-28-2012, 03:34 AM
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It's all in the tuning. The engine in the 2500 is probably tuned for a broader torque curve. Peak numbers don't mean much, its the power under the curve that matters. The 1500 may peak higher, but the 2500 probably makes more tq down low and through out the rpm range.
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Old 03-28-2012, 03:57 AM
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Quote:
Originally Posted by Butter View Post
The 2500 might be tuned for more torque, did you compare the tq numbers?
Exactly.
Where does the peak occur? My guess is its higher up in the RPM range on the 1500 hemi, which may not be as useable in a work truck. Also, the work truck is likely tuned for a fatter torque curve down low where it probably does most of its work. Advertised peak #s can be misleading.
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