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Not yet, but with any mod you have to either be able to go back to stock( like pulling the cat, egr, non EPA approved tuner ,etc.) or Know that it will pass the way it is for many years.
What if you put a 7.3 in a 08 SD and then in 3 years they have a new round of requirements to pass?
Not saying it is not possible, just something to think about before you pull the 6.4.
For the amount of $$$ to make the swap work you could mod a 6.4 and pull every part that makes it worse than a 7.3,IMHO.
95 and Bill, you guys have some great trucks but I have 115,000 on my 6.4, 99% of them are towing trailers, and the thing is a real pleasure to spend hours behind the wheel. Tows like nothing I have ever driven. When I say that I mean stopping, sway, stability, and of course getting to and maintaining speed. MPG really bites but the thousands of hours of safe and comfortable towing make up for it for me.
A V10 or a 7.3 would be great too but in my line of work, keeping a truck beyond 250,000 miles does not make sense. Not for the motor but for the rest of the stuff that begins to break down (tranny all the way down to holes in the seats).
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