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Old 10-03-2014, 11:09 PM
gwillywish gwillywish is offline
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4.6 exhaust manifolds

My 05 4.6 2wd has an exhaust leak that I believe is near the egr nipple on the left manifold. I just changed the tube and nipple when I changed the egr valve a month ago. Everything feels tight when the motor is cool, which leads me to believe the manifold is bad.

I am thinking about shorty headers and was wondering if the 4.6/5.4 are interchangeable for a 4.6 engine. Would it be worth it to even do the swap on a 4.6, or just buy another oe manifold. I plan on buying the parts and having a shop do the labor on this one due to potential exhaust stud problems.
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Old 10-10-2014, 10:36 AM
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bjmayberry2 bjmayberry2 is offline
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Found this on the modular fords site. I'm to new to the modular engines to say with any confidence.

4.6L 5.4L Exhaust manifold swapping
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Old 10-10-2014, 10:36 AM
 
 
 
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