I am really curious what others get for MPG in their COE's Here's mine - mild 406 SBC, 700R4, 4.10 gears, 30" rear tires = 11.5 mpg highway
That's about the same as my Dodge ram p/u with 3.55 gears !! I'd say that's pretty damn good for what you're driving !!
Mine gets fantastic mileage, I haven't added fuel since I bought it! LOL I'll be happy with 15 US mpg. Detroits are harder on fuel that ***mins, but I would be unhappy with much less than 15.
Big Bertha aveages 14 mpg unloaded and 10 mpg with the 11,000 lb camper. Vortec 454, 4L80E, 5.38 gears, 9r-22.5 tires.
My 39 with a 350sbc 400th trans and 3:23rear gets 16mpg USgal I have gotten 20. I have this handicap that affects gas mileage - heavy right foot.