im looking for a crewcab duramax, what are the best years for modification?

 

their all good i believe, the 01 to early 04s have an issue with injectors going out however majority of those have been replaced

 

yeah, my customers 02, injector got stuck open what a mess!,replaced no problem after that. did they change anything in 05? or just use better quality

 

Totally different heads and injectors on an 05.

 

they are all good good luck

 

same fuel economy? stock?, modified?

 

I'd go with an 06 and early 07 stay away from the DPF trucks. They have the stronger bottom end. the tranny is beefed up and has the sixth gear opened up.

01-04 have there injector problems. the 04.5-05 have over heating problem the 06-07 have weak pistons. 07.5 and up have the DPF emissions stuff on them.

I have an 05 getting as high as 25 MGP with just a few mods. Stock I was getting 19-20 and 14-15 pulling a trailer.

 

i think i am going to love these forums there is ACTUAL KNOWLEDGE i just wished there would have been one for babymamas, maybe i would have ended up better off he he

 

Glad to help.
Yeah i know. I need one for a built tranny.

 

With my LLY i could get 20ish mpg on a good criusing day with my chip in economy. It averaged about 18 with the chip before the lift. i average about 15 with the lift kit now. I think i posted it more detailed someplace in the LLY forum not too long ago.