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I was wondering if its possible to swap our 4.6 blocks to a 5.4 . Someone told me that it was a direct swap and that the heads fit. what kind of gains are you looking at for this kind of swap? Is it worth It. Thanks
 

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a 5.4 would give you a lot more torque across the board. most of the parts swap right over.they dont call them modular motors for nothing
 

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Would be a nice project,... friend of mine swapped a 5.8,.. into his 5.0... **** was murder after that...hoggish
 

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The only thing you need to buy are some intake manifold spacers. The 5.4 is just THIS MUCH too wide. Several companies make them.
 

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