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Discussion Starter #1
a guy around here just had all this work done and blew a rod right threw the block after dynoing his 6.7 cummins at 665hp idk about torque. now i know theres some cummins haters on here but dosent that sound a bit low for there motors? i thought cummins had some of the strongest bottem end?
 

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Just like all engines there are bad batches of them. I have seen multiple stock 6.7 that have broken rods and punched them through the block. It isn't very common but it has happened. The 4 I know of were all made in the same month and year but I can't remember what the dates were.
 

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Discussion Starter #5
i guess the 6.7s are weaker than the rest of em lol. still sucks he had quite a bit a money tied up in the truck
 

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My money goes on crap tuning, etc.. the 6.7 is a very strong motor but a crap setup or tuning still kills them.
Was he running a smarty with stupid timing ? What turbo? High DP?
 

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My money goes on crap tuning, etc.. the 6.7 is a very strong motor but a crap setup or tuning still kills them.
Was he running a smarty with stupid timing ? What turbo? High DP?
FWIW my buddy blew a head gasket at 20,000 miles on his 6.7 with a 100HP smarty jr..


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