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3rd Gen Hemi vs. 4th Gen Hemi

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Old Jan 6, 2013 | 10:05 PM
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Default 3rd Gen Hemi vs. 4th Gen Hemi
Hi all. My friends and I were just wondering what Dodge did to increase the power from my 345hp 3rd gen to the current 390hp 4th gen.

Thanks.
 
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Old Jan 9, 2013 | 04:52 AM
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The first generation 5.7 liter Hemi (the third generation Hemi) produced 345 horsepower at 5,600 rpm (the figure varied somewhat by application) and 375 lb-ft of torque (4,400 rpm) from 5.7 liters (345 cid*) when used in the Dodge Ram - one horsepower per cubic inch.

The second generation 5.7 Hemi produced 390 horsepower and 407 lb-ft of torque in the 2009 Dodge Ram 1500, using variable cam timing. Correct guys if I'm wrong.
 
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Old Jan 9, 2013 | 07:04 AM
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Correct, VVT Cam, also Eagle heads, and a redesigned factory intake system.
 
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Old Jan 9, 2013 | 11:06 AM
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Originally Posted by POWER SEDAN
Correct, VVT Cam, also Eagle heads, and a redesigned factory intake system.
Right on the money budd...!!! All i`ll add is, the intake is also variable, it increase`s torque.
 
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Old Jan 9, 2013 | 12:28 PM
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And I though pixie dust was the reason. Sheesh I was way off...
 
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Old Jan 9, 2013 | 01:28 PM
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Originally Posted by Atomic Dog
And I though pixie dust was the reason. Sheesh I was way off...
That's how they achieved the extra 5hp at the crank for 2013, lol!
 
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Old Jan 9, 2013 | 06:02 PM
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2013 got an electric fan for the rad thats where the 5HP comes from
 
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Old Jan 9, 2013 | 10:35 PM
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I thought the 5hp on the 2013 came from having electric steering - no power steering pump
 
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Old Jan 10, 2013 | 12:21 AM
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it was from the new electric steering is where it gained 5hp


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