Best V8 mpg
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Post Fiend
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From: McKenzie River
Best V8 mpg
Curious, whats the best V8 mpg anyone out there has ever achieved?.....I had a 85 Mustang GT 5.0 5spd,the last year with a Holley 4bbl carb., that achieved 30.5 mpg on a trip from Oregon down to S. Cal.. I wasnt in a hurry and set the cruise at about 70mph most of the drive, in 5th gear that was about 1,700 rpms. I couldnt believe it was accurate so I ran the figures 3 times and it came out the same. Return trip I ran into heavy headwinds and drove faster going north, only got about 24.5 that part of the trip. People do not believe me when I tell them I had a v8 that broke 30mpg and Ive never had anything come close since, ( Im happy to get 11.5 with my 460 ).Had 1 friend said he broke 27mpg with his 86 305 z28 Camaro. ....Anybody else out there ever do as well or better?
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From: Dark side of the sun.
Driving from El-Paso to Houston,I got about 20 with a headwind Keeping it around 65 at 1500 RPMs.
Coming back I got about 16-17 pulling a loaded trailer. Kept the RPMs around 2K to stay up to speed because of the hills and I guess thats where it gets into its powerband.
Coming back I got about 16-17 pulling a loaded trailer. Kept the RPMs around 2K to stay up to speed because of the hills and I guess thats where it gets into its powerband.
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Post Fiend
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From: McKenzie River
I believe they were 3.55 Wendell, After the Wife "made" me sell that stang, some years later I picked up a ex-state police 5.0 stang, similarly equipped that got about 24 mpg tops but that one had 125,000 miles on it whereas the 85 5.0 was only 1 year old and about 17,000 miles during that trip.
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From: Central, MA
My '90 Mustang LX will consistently return 26 MPG on highway trips. The 302 is stock minus exhaust work, pulleys and a K&N filter. I'm running 3.55 gears too. Its fun having a low 14-second car that will get good gas mileage on the way home from the track.
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Post Fiend
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From: McKenzie River
I had a friend with a 97 SHO Taurus v8, it did get pretty good mpg (about 26/27 mpg) on the freeway. But he wasnt a very steady driver (never used the cruise) and drove pretty hard.
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Cargo Master
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From: Not as far west as I want
My Olds Auroa will get 26 at 75MPH. The best in a pickup with V8 was 21 in a 2003 5.3 Chevrolet pickup. However at Kansas city I turned north on I-29 and batteled a headwind the rest of the trip and was lucky to 19 MPG then.
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Post Fiend
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The best I can recall, was my 07 mustang GT, I got 26 mpg on a trip to W,Va. It was a 5 speed with 3:31 gears. I've had a lot of V-8's over my 30 years of driving, but thats the best I can remember. My 80 t-bird with a 302 would get 25 mpg on trips to W,Va, but I was younger then and flogged it. I've had newer F150 4x4's with V-8's, but I know there no mileage champs.
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Post Fiend
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From: McKenzie River
I admit the MPGs I got on that trip were phenomenal, Probably the fact that the fox body Mustangs weigh only about 2,700lbs helps alot. I know I had a good tailwind going south on I 5 also. I have a neighbor with a 04 Crown Vic, claims 25mpg. Pretty good for fullsize 4 door sedan.
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my 05 grand marquis averages 24-26mpg highway pencil and paper calcs with the trip computer very close. i do not drive hard . i agree that it is amazing for a full size car and have actually had to take a photo of the computer reading as some folks wouldnt believe it.
jim
jim
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From: Oak Harbor, OH
My '79 LTD with a 351w and a C4 got ~20 on the highway, my '89 Grand Marquis with an AOD (would have loved to have that in the LTD) got ~20 around town and 24~26 on the higway. We had an '82 Delta 88 with a 307 that got 28 or so on the highway, caddy claims 34 out of the northstar in one of the newer models.
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