LBZ: Duramx milage

Big Block 88

Multiple choice muscle
Nov 3, 2008
4,665
0
36
38
Kansas when I am home
^^^^ Not true... What kind of experience are you basing that off of? We do much better than the LMM, not as good as the LB7 unloaded but loaded its all about the same. LBZ was 9-15 towing LB7 is 9-13 towing and LML is 8-14ish towing. Towing the difference is not much. Unloaded nothing has beat the LB7 then the LBZ was decent even saw over 22 on a few occasions. Our LML unladen gets mid to high teens on the highway, but even unloaded the truck I still loaded... Tool boxes full fuel tanks full generator in bed saddles in the cab so no complaints here.
 

IronDX

Member
Jun 14, 2013
213
0
16
I had a stock LMM 2500 EC/SB 4x4 that would get 17 empty hwy, 8 towing, & 14 city. MPG was a lot worse once the DPF was shot.

The stock LML 2500 EC/SB 4x4 that I "owned" got 16 empty hwy, 7 towing, & city driving 13.

When my LBZ was stock I got 19 empty hwy, havent towed yet, & 14 city.
 

IronDX

Member
Jun 14, 2013
213
0
16
It was a 5th wheel trailer that weighed at least 9K loaded. Nothing really heavy in the bed & 2 total adult passengers in the cab. This same trailer was pulled by both the LMM & LML. Cruise control set at 64 & at times 66, with T/H on.
 

kansascav24

New member
Feb 24, 2014
15
0
0
Pennsylvania
I see 17-19 highway and sit around 14/15 in the city. I haven't towed anything too heavy with it yet to have numbers for that. Since I got EFI Live, its stayed the same.