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Message: [QUOTE="C'roy78stroker, post: 1513373, member: 2884"] I'll be looking into this in case anyone was remotely interested in the original idea. If the stock crank rod journals can be destroked .250, a longer custom rod would be built, combine that with a .010 overbore, displacement would come out to a 6.9L ironically. I also ran numbers on the rod/stroke ratio (1.88) and bore/stroke ratio (1.04) with the altered setup. If the general ratio rules of thumb apply to any internal combustion engine then these numbers make it seem plausible. Plus with a longer rod, there would be more dwell time for the Piston near TDC which would also aid in the fuel injection window problem that we start to face with large fuel at higher rpm's. I'd like to get input about whether or not these calculations could be applied to diesel short block assemblies or not. Seems to me that rod ratio was a reason 6.7 Cummins crowd we're destroking down 6.4 liters. [/QUOTE]

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