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Go Back   South East Mopars Forum > Mopar Models > Dodge Ram Forum > 3RD Gen : 2002 - 2008 > General Discussions
Reload this Page Possible upgrade to a 5.7 Hemi?
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Old 07-06-2011, 08:03 PM   #26
SmokedRam
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Originally Posted by Storm Rider View Post
The biggest difference between the 4.7 & 5.7 is that the 4.7 only has 8 spark plugs as the 5.7 has 16 spark plugs. The 4.7 is a very reliable engine and gets a little bit better mileage. I own a 5.9 and it is a monster. I have a heavy duty 4x4 so my mileage is terrible, but the 5.9 will never let you down.
If it's one of the 2008 or newer 4.7's it will have 16 plugs too...they also got a HP boost from 230 to 290HP
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