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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 01-28-2011, 12:27 PM
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Default 07 an 08 4.7 hp difference

What make the 75 hp gain difference on the two motors and can you buy yhe parts to make the 07 have the same numbers?
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Old 01-28-2011, 12:36 PM
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The heads are the biggest part of the HP gain. Cam profiles remain the same as does bore, stroke and compression.
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Old 01-28-2011, 01:30 PM
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Originally Posted by RamTech View Post
The heads are the biggest part of the HP gain. Cam profiles remain the same as does bore, stroke and compression.
So if I found 08 heads The rest would be the same? Is there an intake change? Or ECM flash needed?
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Old 01-28-2011, 01:52 PM
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Without crosschecking part numbers, I can't be sure about the intakes. From the description in the service info, they appear to be the same.
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Old 01-28-2011, 02:12 PM
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Without crosschecking part numbers, I can't be sure about the intakes. From the description in the service info, they appear to be the same.
Cool thanks for the info..
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Old 01-29-2011, 02:18 AM
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http://www.allpar.com/mopar/47.html

It seems the big differences are the heads and intake manifold. The '08+ are running two spark plugs per cylinder. I'm not sure how involved it would be to run 8 more plugs. I would assume a pcm and various other parts swap.
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Old 02-02-2011, 12:12 PM
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Originally Posted by JLAudio11 View Post
http://www.allpar.com/mopar/47.html

It seems the big differences are the heads and intake manifold. The '08+ are running two spark plugs per cylinder. I'm not sure how involved it would be to run 8 more plugs. I would assume a pcm and various other parts swap.
Yeah lot more info there. Ecu tuner here I come.
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Old 02-15-2011, 10:50 PM
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Quote:
Originally Posted by JLAudio11 View Post
http://www.allpar.com/mopar/47.html

It seems the big differences are the heads and intake manifold. The '08+ are running two spark plugs per cylinder. I'm not sure how involved it would be to run 8 more plugs. I would assume a pcm and various other parts swap.
Ok so after reading your post I went straight to my truck. Where is the second spark plug suppose to be again..... is it under the coil pack???? Because I only could see 4 on each side
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Old 02-15-2011, 10:52 PM
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The second plugs are at the end of the wires attached to the coils.

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Old 02-16-2011, 09:09 AM
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Quote:
Originally Posted by RamTech View Post
The second plugs are at the end of the wires attached to the coils.

HOLY CRAP that is BAD A$$ Thanks for the picture. thats PIMP
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