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Hey guys can anyone shed some light on what is the difference between 7.3 IDI and A 6.9 IDI. I heard that there is a power difference. I wanted to know if there is a physical difference as well. For example, is the block the same? are the heads the same? will the mounts line up? By the way I have a 1994 7.3 idi turbo which threw a rod through the block. Still wondering what caused that? Thanks in advance!!!
a 7.3 is a bored out 6.9.
there is a difference in the heads, but not a large difference and the head bolts.
the power difference is around 20 HP or so.
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