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6.7 rail vs 5.9 rail

909 Views 6 Replies 5 Participants Last post by  dieselwrencher
im gathering parts and am planning on building a 6.7 long block for next years pull truck a early 04. was looking over the fuel rails on the 2 engines tonight and debate trying to use the 6.7 rail for size reasons mostly,but id have to adapt the 5.9 sensors to it, are the 6.7 injectors and rails good for more rail pressure than the 5.9?? don has said the 6.7 injector bodys wont work with the 5.9 ecm. anyone have any info on these comparisions??
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I noticed the 6.7 lines are all bigger,but after a close look with the caliper the mail feed lines are the same od. id love to do the boss hoss intake on it.
I wouldn't hesitate to use a 5.9L rail and injector lines on a 6.7L :thumbsup:
thats what im thinking,the feed lines the same size. took both heads off side by side the 6.7 and 5.9 heads look the same except for 2 small coolant holes between cyl holes or close to where they meet.
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