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4th Gen Ram Tech 2009+ and up Rams: This section is for TECHNICAL discussions only, that involve the 2009 and up Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

hemi head compatibility

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Old 02-20-2014, 01:52 AM
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Default hemi head compatibility

hey everybody new to the site. so I have come across a 2012 5.7 block from a 2500. I am stripping it down and rebuilding it. I happen to have a pair of heads from a 2003-2008 5.7. I have seen posts about putting newer heads on older blocks with different head gaskets but I need to know about the other way round old heads on new block. I know it seems silly since the new heads flow so much better but this is a budget build to Frankenstein a 5.7 hemi into my 1999 ford ranger. any help you guys could offer would be greatly appreciated.
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Old 02-21-2014, 10:43 AM
LU229 LU229 is offline
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You`d be ALOT firther ahead by just buying a good complete running engine from a junkyard.
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Old 02-21-2014, 02:15 PM
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if I hadn't gotten the block and heads for free you would be right but I work on these for a living. I can rebuild it for 800 dollars in parts. a used motor around me runs about 2000 dollars
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Old 02-21-2014, 02:22 PM
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Quote:
Originally Posted by link040188 View Post
if I hadn't gotten the block and heads for free you would be right but I work on these for a living. I can rebuild it for 800 dollars in parts. a used motor around me runs about 2000 dollars
If you work on these for a living, why can't you determine if they will work or not?
What's the hold up? Or did I miss something?
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Old 02-21-2014, 03:28 PM
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swapping old heads onto new motors is not something Chrysler condones so my peers nor i have done it before
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Old 02-21-2014, 03:31 PM
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the head was redesigned for 2010 so the 2003-2009 head is not the same as 2010 up
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Old 02-21-2014, 03:31 PM
 
 
 
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