6.0 gas mileage

18 here with 4.10s and a 3800 stall and a 28" tire

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Originally Posted by little engine that could

18 here with 4.10s and a 3800 stall and a 28" tire

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Thanks! Do you guys think I could push 20+ with long tubes and some AFR's?

Hes saying 18 highway im not see any better then that with 6.0.

I've got an '06 GMC1500 ecsb, lq9, dynatech lt's, comp cam, springs, pr's, cai, magnaflow true duals, Nelson SD tune, 3.73's & 20's. It get about 14.0 city,
and got 18.5 coming home from San Antonio, after my last re-tune in October,
(for the cam).

FI 9 in the city and 22 on the highway!

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Originally Posted by Smoker_98

Wondering what most of you get with the 6 liter. Specifically those of you that are tuned. From what I have found stock looks like 12-15. Tuned guys? (if you have other mods please list) Nelson? Thanks!

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Originally Posted by Jamest

FI 9 in the city and 22 on the highway!

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That's what I am talking about! Great job man!

Well I am looking to pick up a 2500HD, what RPO codes should I be looking for? I guess I am trying to narrow down the good RPO's for the 6.0L and 4L80e ...I know there are different variants.:thanks: