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1999 crewcab duelly 4x4,
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66 Posts
Discussion Starter · #1 ·
im considering purchasing a used f550 longblock with some fixins and dont know if there are any differences between the two motors. both motors are 1999, mine had small intake inlets and the f550 99 has large intake inlets, i do understand that would indicate build date within the 1999 year as both are marked.
 

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1999 crewcab duelly 4x4,
Joined
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66 Posts
Discussion Starter · #4 ·
thanks for the flutter with the rods comment. and thanks for feedback, im debating just applying my H-11s, intake plenums, injectors, turbo and running it.
 

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403 Posts
Sounds like your truck is an early '99 compared to the '99 550.
 

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All done now
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23,170 Posts
Forgot about that. Thanks. But I thought that was the '05 7.3
 
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