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v-8's get crapy gas mileage????

Old Apr 20, 2006 | 08:40 AM
  #41  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by Capster78
For you V-8 bashers out there that think in hp/liters, 0-60 magazine times and magazine racing. For thouse who say that owning a V-8 is to expensive. I paid $12.5 for the car, pay about $150/month insuranance. I documented my trip from Texas to the house just because I was curious what kinda MPG you can get with 6 speed stock LS1. Im not sure where the dealership gets their figures from but here are myne. I filled up full before I left. When I got down to about 3/4 of a tank left I stoped , recorded the mileage and then toped it off and recorded how much gas I put in. I rounded off to the nearest tenth.

Total Mileage: 1524mi Stops: 6

Stop: 1
Miles Traveld: 237
Gas: 8.8
MPG: 26.9

Stop: 2
Miles Traveld: 267
Gas: 9.5
MPG: 27.6

Stop: 3
Miles Traveld: 266
Gas: 10.0
MPG: 26.6

Stop: 4
Miles Traveld: 245
Gas: 10.0
MPG: 24.5

Stop: 5
Miles Traveld: 251
Gas: 9.5
MPG: 27.0

Stop: 6
Miles Traveld: 256
Gas: 9.0
MPG: 28.4

Total:
Miles Traveld: 1524
Gas: 56.8
MPG: 26.83

Stop #4 was in a prety hilly area of TN and VA and stop #6 was further into va when the speed limit drops off to 65. I drove 80 almost all the way thru.
you mean 1/4, dont you?
Old Apr 20, 2006 | 08:40 AM
  #42  
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Default Re: v-8's get crapy gas mileage????

I get between 3-35 on the highway with plenty of little highway "got to get around the truck" sprints. And im putting down about 330 to the wheels with a 9.6-10.00 AF ratio on throttle..

Gas mileage is not determined really "because" they are v8s, they have less gas mileage becuse they are heavier cars and typically do not have as good aerodynamics as some imports. However, at higher speeds they have less rpms so it almost equals out the fuel consumed compared to an import, but they have to give a little more throttle input because they are heavier.

I know I sacrificed a little gas mileage when I went AWD, but sacrificinng 3-4 mpg? Compared to how much a car costs and how much money we put into our cars? Its maybe an extra 20 bucks a month.


In the city? I have no idea, I boost too much...
Old Apr 20, 2006 | 08:59 AM
  #43  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by D_Eclipse9916
Gas mileage is not determined really "because" they are v8s, they have less gas mileage becuse they are heavier cars and typically do not have as good aerodynamics as some imports.
FWIW, 4th gen F bodys have some of the best aerodynamics of any car produced today. IIRC i've seen numbers as low as .31 for a firebird/formula, and .32-.35 for TA's and Camaro's.
Old Apr 20, 2006 | 09:03 AM
  #44  
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Default Re: v-8's get crapy gas mileage????

384 rwhp 31 mpg @ 72 mph. z06 is at about 1900 rpms at 75.

Parent's stock mn6 vert has a taller 6th gear and is at 1600 rpms at 75 and gets 33 mpg.
Old Apr 20, 2006 | 05:08 PM
  #45  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by BCisme
damn i kn ew that your predator tuned sucked (especially when it spit out black smoke at 6K on steens dyno) but damn you LOST 7 mpg with intake/exhaust and tune?


you need a retune, badly. your a/f has got to be way off.
Cars will also blow smoke due to carbon buildup in the cats. A perfectly tuned car will also blow out smoke on the first pull. Although my cats being fucked up could have helped contribute to it.
Old Apr 20, 2006 | 05:23 PM
  #46  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by Fat Nick
Cars will also blow smoke due to carbon buildup in the cats. A perfectly tuned car will also blow out smoke on the first pull. Although my cats being fucked up could have helped contribute to it.

nah, i just think your a/f is off.
Old Apr 20, 2006 | 05:37 PM
  #47  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by BCisme
nah, i just think your a/f is off.
Possibly cats could do this due to different exhaust flow, but when it was tuned it was 12.3 across the board.
Old Apr 20, 2006 | 07:50 PM
  #48  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by Fat Nick
Possibly cats could do this due to different exhaust flow, but when it was tuned it was 12.3 across the board.
That's a little rich. And you said you had it leaned out to that?
Old Apr 20, 2006 | 09:09 PM
  #49  
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Default Re: v-8's get crapy gas mileage????

Originally Posted by 99formulam6
depends on how i drive. i dont pretend to get good gas mileage, but for how the car is modded, it gets decent mileage as long as im not taching 4 grand all the time
why don't you give me a figure...?
Old Apr 21, 2006 | 07:19 AM
  #50  
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Default Re: v-8's get crapy gas mileage????

uhm....i got 250 mi/tank in the city last time i payed attention....on the highway driving from norfolk to tampa i got 350 mi/tank. its all on how you drive.


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