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Discussion Starter · #1 ·
I know the Duramax came out in 01 with the LB7. Please copy and paste my below questions and answer them for me.

What years were they available, what were the main problems with the each, the advertised crank #'s, and if there was any difference in the Allison transmission. Also be sure to include experience/dyno #'s/track times with aftermarket programmers like EFI, bullydog, edge, etc...

LB7 01-04.5

LLY 04.5-05

LBZ 05-07.5
 
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