Possibly the stupidest question ever. What kind of fuel economy on the interstate would an LS7 be looking at? I know supercar buyers do not buy cars for MPG, but I was just wondering what the fuel economy would be?

 

bad/bad. just guessing, i have no idea . actualy, i bet you that with the 6-speed, the mpg will be pretty good considering its a 7.0L engine

 

I would guess 18/25 is what the EPA will rate it. Hell look at the 04 Z06 it did 20/28.

These cars still have to pass emissions which means very little bad stuff coming out unburned at low rpms.

But like you said who cares.

 

Hell the Viper's V-10 gets 20 on the highway

 

I bet it will get 23 MPG or more on the highway.

 

i'd buy it if it got 15, who cares RIGHT???

 

1) you dont buy a $65K sports car and care about mileage
2) 17/22- that's my guess

 

Estimated fuel economy
(mpg city / hwy / combined): automatic: 18 / 25 / 21
manual: 19 / 28 / 23 TBD

GM info.

 

Those are regular C6 coupe and convertible figures, not Z06 C6 info.

 

Thats what J-ROD posted in this forum not too long ago. Check that thread if you dont belive me,

 

I'm guessing as high as 28 hwy.

 

I care, I want one as a daily driver & home. I would have to get rid of my house payment to get one.

 

I doubt there will be an auto ls7. Can you immagine the extreme measures torque management will take to protect the 4l60e. horrible. I think it should only be a m6 car. That being said either way, the ls7 will be the most efficient 500hp production car ever produced. I wouldnt worry about the mpg one bit.

 

You're right. Reminds me of buying a 1977 280Z nearly 30 years ago. Paying over $7k for a car, and I asked my old man the questions, "Gee, I wonder what kind of mileage it gets?"

His response: "You've got 7 grand to spend on a car, you don't care what gas costs..."

Times haven't changed...

 

February CAR AND DRIVER has it as 16/22 mpg

 

I would say anything around 20 is good. My friend just told me he's lucky to get 24 in his SRT-4. I wish I could get 20 mpg again. I would have to really try to get 20.

 

My corvette gets 24 in town and 32 on the hw with all the mods. My gas mpg went up after all the heads and cam. I did get it dyno tuned so I thinked that helped also. From Chicago to Davenport Iowa I got 36 MPG

 

If I recall correctly, the LS7 was still scheduled to use DOD (displacement on demand) which disables alternating cylinders fuel until I assume a TPS threshold is passed. Damn would it be nice to only pay the gas bill of a 3.5L 4 cylinder vette, but have the performance of the 7.0L wne you stand on the pedal.

 

No DoD for the LS7. The DoD lifters weigh too much for the revs that the LS7 pulls. I'm pretty confident here as the guys who engineered the exhaust valve and DoD lifter are two cubicals away from me. I'm stuck working on Ford 3V valvetrain

 

Please tell me you hate your job and how much it sucks. I invision working designing engine components to be the coolest job in the world, and im rediculously jealous...

incidentally, I stand corrected regarding DoD. That makes sense, although i didnt know it was lifter actuated. I knew that chrysler's dod was though.