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05-22-2008, 12:08 PM
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#1
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Site Team
Join Date: Dec 2006
Posts: 659
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Highest MPG V8?
I know that the V8s are generally not known for their fuel economy, but I though I remembered that the Corvettes were rated about 32 MPG highway. I couldn't confirm this, though, since the Chevrolet website only claims 26 MPG highway (still not a bad number).
I also saw the recent article on the Oldsmobile that got good mileage, I think it was about 19 MPG highway.
What other "high" MPG V8s exist?
Anyone (besides myself) have any gas-saving V8 projects in the works?
-Bob C.
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05-22-2008, 12:15 PM
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#2
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Registered Member
Join Date: Mar 2007
Posts: 1,546
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even the ol 350 carbed boats of the past got very high teens to mid 20's highways...
we had a Chevy caprice that would get about 19-22 mpg on highway if you drove it right...
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05-22-2008, 12:19 PM
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#3
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Registered Member
Join Date: Nov 2007
Posts: 1,111
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The Corvette constantly gets mentioned on fuel economy top 20 lists and such.
The Ford Crown Victoria platform 23 freeway on the new rating system. Mustang GT gets 22-23. From personal experience the Crown Vic actually gets closer to 26-28mpg on a constant freeway cruise tho.
Lexus GS 460 gets 24 freeway on the 4.6L V8 as do most of their other V8 cars.
Cadillac STS with 4.6L gets 24 and the Infiniti M45 gets 21
There aren't a whole heck of a lot of V8 cars out there anymore as most companies have gone to 6 cylinder engines. Regardless of that fact though, having V8 cars that are getting int he 20's on the new testing the EPA does is pretty good.
__________________
- Kyle
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05-22-2008, 12:19 PM
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#4
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Registered Member
Join Date: May 2008
Posts: 211
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'97 Expedition, SOHC 4.6 with a towing package ... 22 mpg actual at 65 mph.
I'm sure with some aerodynamic mods that could be taken to 25 mpg and maybe even higher.
Virtual boattail anyone?
__________________
94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques ..
89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg
87 Ranger 2.3 5spd.. Does not currently run..
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05-22-2008, 12:20 PM
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#5
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Registered Member
Join Date: May 2008
Posts: 211
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95 Mustang 5.0 , 27 mpg actual at 70 mph cruise..
__________________
94 Altima 5 spd.. Stock.. 29 mpg combined with basic hypermiling techniques ..
89 Yamaha FZR400 Crotch rocket, semi naked with only the bikini fairing, no lowers, 60 plus mpg
87 Ranger 2.3 5spd.. Does not currently run..
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05-27-2008, 11:05 AM
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#6
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Registered Member
Join Date: Nov 2007
Posts: 228
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Quote:
Originally Posted by fumesucker
95 Mustang 5.0 , 27 mpg actual at 70 mph cruise..
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1988 Ford Thunderbird, too, same engine.
Thou to get 27 I had to keep it around 62-63 cruise controlled...
Or was it 29? It's been so long lol, but thereabouts, assume 27 to be safe.
I suspect possibly the Mercury Cougar and the Lincoln Continental Mark VII (or 8?) of about or around those years as well.
__________________
A FE gauge should be standard equipment in every vehicle.
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05-22-2008, 12:57 PM
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#7
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Registered Member
Join Date: Apr 2008
Posts: 18
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Check out my "88 Mustang ( http://www.gassavers.org/garage/view/1408). With the 5.0 liter V8, 5-speed and 2:73 gearing, I am getting close to 30 mpg regularly on my commute. The torquey V8, manual transmission and high gearing combine for good economy if you drive carefully. The newer cars with more efficient electronics than my 20 year old car should do better.
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05-22-2008, 01:31 PM
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#8
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Registered Member
Join Date: Feb 2008
Posts: 1,652
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I've heard of crown vics pushing into the 30s on the highway, that might have been with some mods though.
__________________
I remember The RoadWarrior..To understand who he was, you have to go back to another time..the world was powered by the black fuel & the desert sprouted great cities..Gone now, swept away..two mighty warrior tribes went to war & touched off a blaze which engulfed them all. Without fuel, they were nothing..thundering machines sputtered & stopped..Only those mobile enough to scavenge, brutal enough to pillage would survive. The gangs took over the highways, ready to wage war for a tank of juice
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05-22-2008, 01:34 PM
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#9
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Registered Member
Join Date: Nov 2007
Posts: 1,111
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Quote:
Originally Posted by RoadWarrior
I've heard of crown vics pushing into the 30s on the highway, that might have been with some mods though.
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I should have probably said, that's about an 85mph highway cruise. At 65-70 we actually got around 31-32.
__________________
- Kyle
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05-22-2008, 08:45 PM
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#10
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Registered Member
Join Date: Oct 2007
Posts: 698
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I can get around 25-26 mpg out of my '83 Eldorado with the 4.1 liter engine. On one trip I did get about 32 mpg with a lot of drafting...
__________________
"We are forces of chaos and anarchy. Everything they say we are we are, and we are very proud of ourselves!" -- Jefferson Airplane
Dick Naugle says: 1. Prepare food fresh. 2. Serve customers fast. 3. Keep place clean.
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