Help...Are all 5.7 heads the same.??? - Hemi Truck Club
 
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Old 03-28-2008, 08:20 AM   #1
 
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Help...Are all 5.7 heads the same.???

I am buying some 5.7 heads to had ported so I do not loose the use of my truck.

The supplier says that all 5.7 heads from 2003 -2008 are all the same for car truck etc.

Is this correct?

What is the difference?

More to the point will they all fit 2006 mds truck.

S..t......thought this was the easy way to do this now panicking...

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Old 03-28-2008, 08:43 AM   #2
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Help...Are all 5.7 heads the same.???

I believe the 03's are different as I think they don't have the EGR hole. Jay should be able to chime in on this one.
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Old 03-28-2008, 08:59 AM   #3
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Help...Are all 5.7 heads the same.???

Quote:
quote:I believe the 03's are different as I think they don't have the EGR hole
That's the only difference that I'm aware of, and the provision is there, just not drilled. As a side note, it sounds like the 09 5.7 heads will have an improvement. I also wonder where the extra compression in the 09s comes from. Pistons, or heads.
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Old 05-19-2008, 01:15 AM   #4
 
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Help...Are all 5.7 heads the same.???

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quote:Originally posted by Superjay:
I also wonder where the extra compression in the 09s comes from. Pistons, or heads.
I wonder if they are 6.1 heads with the chambers opened up a little
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Old 05-19-2008, 12:56 PM   #5
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Help...Are all 5.7 heads the same.???

My sources tell me the new 5.7 heads will have closed chambers. It seems like I remember reading there going to be of a totally different runner/chamber design so I doubt they're reworked 6.1 heads, but it's possible.
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