C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Miles per gallon

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Old Jun 6, 2007 | 02:52 PM
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Default Miles per gallon

How many miles to you get on your C4...
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Old Jun 6, 2007 | 02:57 PM
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i would say it depends on your driving habits..some of us have lead feet. some of us have extreme performance parts and are no longer any where near stock condition.to do a comparison from car to car. so the amount of mods. made also plays in the equation. I'm getting somewhere in the mid twenties around city to low 30's on extended highway driving.

I would say if you are worried about gas this may not be the car for you. I like to run premium. You could be well served running some japanese rice burner for better gas mileage. But you won't ever be as cool.

Last edited by edar; Jun 6, 2007 at 02:59 PM. Reason: forgot mileage info.
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Old Jun 6, 2007 | 02:59 PM
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Originally Posted by edar
i would say it depends on your driving habits..some of us have lead feet. some of us have extreme performance parts and are no longer any where near stock condition.to do a comparison from car to car. so the amount of mods. made also plays in the equation. I'm getting somewhere in the mid twenties around city to low 30's on extended highway driving.

I would say if you are worried about gas this may not be the car for you. I like to run premium. You could be well served running some japanese rice burner for better gas mileage. But you won't ever be as cool.
So how many do you get.
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Old Jun 6, 2007 | 03:00 PM
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Albeit I get under 10MPG city and probally 15 highway, with a 383ci different tranny gears and 3.73's out back gas mileage doesn't matter to me, its a weekend driver anyway and I like to have fun with it.
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Old Jun 6, 2007 | 03:01 PM
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Depends.. highway with the cruise on, or just in general..

I havn't reset the average MPG in my car since I got it in February and it says I'm averaging 18.5 The car has had the intake off twice and heads off once since I purchased it and has spent plenty of time idleing and 'testing'. Lots of peddle to the metal through the gears to make sure everything is all set..

My commute to work every day is 95% highway though and with the cruise set on 75 - 77 I see 29 - 32 MPG

I'm pretty sure if I reset the average MPG and behaved myself I could average 22 or better over the course of a month.. ( the problem is behaving myself for that long )
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Old Jun 6, 2007 | 03:13 PM
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86' Auto
2.59 rear
TPIS Headers, TPIS intake
AFS wheels 275/40 fronts, 315/35 rears

17MPG in town
29MPG highway @65-70mph
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Old Jun 6, 2007 | 03:13 PM
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Thanks I was having a discussion with someone and told him I use ta get around 25 in my old 88 and he didnt believe me....
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Old Jun 6, 2007 | 03:13 PM
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Used to get 17/24 on the 89
Average 16-17/23-24 on the Z
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Old Jun 6, 2007 | 03:17 PM
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average at 20.2 and 35mpg in 60th gear at 73mph
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Old Jun 6, 2007 | 03:35 PM
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My average since new is 20.5 mpg that using the 3.45 gear set. That milage is since new and over an 11 year period of 40,000 miles. I just changed to a 4.10 gear set so I expect to see around 18 or so.
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Old Jun 6, 2007 | 03:44 PM
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Originally Posted by derekguzz
average at 20.2 and 35mpg in 60th gear at 73mph

WOW 60 gears that car must fly...


Over that last 2,000 my avg. 21.8
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Old Jun 6, 2007 | 03:44 PM
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17 city
26hwy
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Old Jun 6, 2007 | 04:20 PM
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yeah i got 60 gears...lol at 73 mph too....every 25 rpms i have to shift..
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Old Jun 6, 2007 | 05:26 PM
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Before mods 31 highway after 21 mpg.
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Old Jun 6, 2007 | 06:07 PM
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4.10 gears, ~375 rwhp, and 26-28 highway mpg.
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Old Jun 6, 2007 | 07:40 PM
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Originally Posted by derekguzz
yeah i got 60 gears...lol at 73 mph too....every 25 rpms i have to shift..
Cutch much?
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Old Jun 6, 2007 | 08:41 PM
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Default mpg

22.5 city/hwy avg.
31-33 hwy.
changed my 86 cast iron to 88 alum. heads,
cleaned out plenum, throttle body, runners, manifold.
rochester multec 22 lb/hr injectors
89 exhaust
jacobs ign.coil
accel dist. cap / rotor
throttle body airfoil
K&N air filter
low resistance plug wires
platinum plus 4 plugs
corsa mufflers
rear Y pipe with balance tube
timing set to 10 btdc
46 psi fuel pressure
3.07 rear
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Old Jun 6, 2007 | 08:55 PM
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24.5 hwy stock 85 with auto and 3.07 rears,after mods
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Old Jun 6, 2007 | 08:56 PM
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Originally Posted by Banned for life
17 city
26hwy
same here
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Old Jun 6, 2007 | 10:47 PM
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Stock 1986, A4, w/3.07. I avg. 14 mpg city and around 17 if I add a lot of highway driving. I got it up to 20 mpg once, coaxing the gauge on the highway.

I've got my work cut out.
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