The bent rods problem occurs when the engine is modded beyond 500HP AND on a tune that was not built for the mods that were done (twin turbos and canned tunes.)
Trucks that have tunes and exhaust are fine on stock rods. There's not enough air or fuel to make rod breaking power.
H&S has revealed a single turbo replacement and tunes written for it that make over 600hp on stock rods. Granted they are keeping the power off until higher RPMs, but they are succeeding. (Unless the US Govt puts them out of biz.)
Where failures occurred was on the twin turbo kits that did not have tunes written for them, just using a stock canned tune.
Looking at photos of the bent/broken rods, it's pretty clear that Ford really carved these down to hold just the HP the engine is built for stock. There is not a lot of headroom to make big power. Also, they are powdered metal, not forged.
End of the story is that there are two companies making aftermarket rods for this engine.
H&S is succeeding so far with a 600hp single replacement turbo, though clearly they are holding off on the power at lower RPMs.
Rods are strong enough for most, and there's aftermarket solutions for those few who have modded their trucks beyond what the stock rods will handle.
2012 F350, 6.7L Diesel, 4x4, SRW, Quad Cab, Short Box, Loaded, Ingot Silver
Last edited by TrickTruck; 11-15-2012 at 11:29 AM.