Will a 6.7 shortblock in a 5.9 truck pass smog?

Mark Nixon

Mark Nixon

No Savior among the flesh
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Feb 26, 2009
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Not trying to start a fight, but has anyone installed a 6.7 short (or long) block into a 5.9 truck, with 5.9 injectors and had it smogged?
Did it pass a smog/emissions test with the 5.9 ECM and injectors in it?

Intuition says that it should, so long as you didn't mention it was a 6.7 to the test operator.
Any first-hand experiences?

Mark.
 
As long as the long block is the same or newer model year than the body you are generally OK. I wouldn't mention it unless it comes up though.
 
This has me worried if time comes I have to smog my half ton. lol
 
I dont think they would ever know. I dont see it being an issue at all but I have no first hand experience.
 
I haven't had an issue with a 5.9 where a 7.3 is supposed to be. They don't even say anything.
 
If it doesn't smoke no one will know, they check emissions for diesels by i think it is called a photo opacity eye cell that is looking for smoke from improper tunes or other issues causing smoke.
 
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