. actualy, i bet you that with the 6-speed, the mpg will be pretty good considering its a 7.0L engine 
LS7 Fuel Economy
Thread Starter
TECH Junkie
Joined: Nov 2003
Posts: 3,877
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From: Gulf Shores and DC
LS7 Fuel Economy 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?
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.
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.
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Brett Foote
TECH Apprentice
Joined: Jan 2002
Posts: 356
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From: Texas
Originally Posted by taz99
Estimated fuel economy
(mpg city / hwy / combined): automatic: 18 / 25 / 21
manual: 19 / 28 / 23 TBD
GM info.
(mpg city / hwy / combined): automatic: 18 / 25 / 21
manual: 19 / 28 / 23 TBD
GM info.
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.
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. 
TECH Apprentice
Joined: May 2002
Posts: 318
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From: Leg Dist #31, WA
Originally Posted by WECIV
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?
His response: "You've got 7 grand to spend on a car, you don't care what gas costs..."
Times haven't changed...
Launching!
Joined: Feb 2003
Posts: 209
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From: Iowa
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.
Teching In
Joined: Oct 2002
Posts: 35
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From: B.C, MI
Originally Posted by GuitsBoy
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.
Originally Posted by jtsc23
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
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.