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Originally Posted by swamp2
And you don't buy a modified N55 that is stroked?
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No. A 3.5L N55 will have a stroke over 100mm, and will wreck the engine geometry (rod ratio). It's just not realistic in my opinion.
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The 1M is an N55 with 3.0l and 7k rpm. I do think 470 is a bit on the high side, especially since SCOTT26 has already hinted at 450. However, it certainly is not out of the realm of possibility.
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I think SCOTT is throwing out a rough figure. I consider it a lower bound of the target range - a safe number, if you will, so as not to "over-promise". Certainly no one knows the exact final figure yet since the engine still has at least a year worth of development yet and probably more than two years. But I suspect they will come up with a very advanced turbo system that allows them to get all the power they need and then some from the current 3L block.