Does anybody have a power curve graph for an 05 LLY? I just want to know what is the best rpm range for my truck to run in for economy sake. I would have asked this in the lly forum but I believe our truck curves are different.

Yes I would also like to see one.

I'd like to see one as well, but just from my butt dyno with a 4.50 rear end on it I seem to get the best at about 62 mph or about 2 to 2100 rpm on the flats. Going uphill is another matter, trying to keep it in the sweet spot can be tough with traffic. Any other thoughts?

I have been watching my truck when pulling and it seems to me that I get the most out of it when I am at 2150.

I should have mentioned that I also seem to get the best power at about 2100. But for me thats at about 56 mph with 5:13 gears.

I can't believe that nobody has one. Including myself. :( Just one more of those things I wish I had kept from when I bought my truck.

That is interesting becuse when I ask about these when I was looking at the Ford and GM trucks the different dealers, would look at me saying what is hp /toq and BSFC and VE on these engines? They would say that they hadn't seen such things?:eek:

the butt dyno is the most accurate :D