Connecting rods

Tsgs69400 · Dec 2, 2016

I have been reading about the earlier engines and rod failures. I see that there seems to be more reports of the 11' and 12's with this problem.
Can anyone confirm or deny that Ford made any changes to the factory rods between 11' and present day, and what those changes may be?

Black AOD · Dec 2, 2016

11s and 12s supposedly had issues with weak cylinder heads valves. Not weak rods

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griz700rocket · Dec 2, 2016

I believe tuning is the only thing that changed to make the rods hold up better.

Tsgs69400 · Dec 2, 2016

Thats is interesting because some aftermarket rods only say they apply to 11' to 14' my.
Its hatd to believe that the 17' does not have a different rod with over 900 ft lbs rjo.
I suppose tuning may apply as well as reducing low rpm torque. Such as with pmr rods on the 7.3.