Fuel Mileage

Tech discussions on the L77 6.0L V8.
Posts: 328
Joined: Mon Sep 11, 2017 10:17 am
Location: North Jersey

Re: Fuel Mileage

Post by lastcall190 » Fri Dec 28, 2018 2:11 pm


Can't keep my foot out of it... still 15.5mpg

Smiles are high though. I still need to get my alignment straightened out, never know what that could be wonking up.

2012 Caprice
!DOD : LS9 Cam : Pat G : Magnaflow : VCM

2008 CVPI
168k and going strong

Posts: 422
Joined: Wed Dec 31, 2014 2:58 am
Location: Texas Hill Country

Re: Fuel Mileage

Post by 9C1fanatic » Sat Dec 29, 2018 1:08 am

My average is 18-19 MPG mixed city and highway driving. I cant complain but I have noticed since turning off the DOD I rarely ever see over 22 MPG. I think my all time best post DOD deactivation trip was San Antonio to Houston (down hill most of the way) at 23.8 MPG. Back when DOD was enabled 22-23 MPG was childs play even at 75-80 MPH. Granted the gulf states are flat, but when the car was less than a year old with DOD still active I achieved 26.7 MPG AVERAGE on a trip to Georgia and back.
Garner Ames

1975 Pontiac Grand Am L77 - 14.82 @ 92.89
1991 Chevrolet C1500 L31 Vortec/5 Speed
2014 Chevrolet Caprice 9C1 L77 - 13.60 @ 105.87
SS Roto-Fab CAI, Solo axle backs

2015 Chevrolet Caprice 9C1 6.0L (owned by the tax payer in all of us)

Solo axle backs

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