(14 Aug 2020, 1:28 pm)mb134 wrote It doesn't, however, take away from the fact that a larger engine will be under less stress when coupled with the same gearing.
My, admittedly limited, understanding of engines tells me that a higher capacity engine (i.e a 6.7L) will generally produce the same amount of power as a lower capacity engine (i.e 5L) at a lower RPM if gearing is the same. Therefore as well as it having more at the top end, it's also under less stress for the most part.
Either way, regardless of the engine, it'll still be spinning at the same RPM if the gearing is the same, so say the StreetDeck is sitting at 2000RMP at 50mph, so would the B9.
It's not really about the stress put on the engine, but the fact that the gearing just isn't suitable for higher speeds.