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7/19/11 3:37pm - Original Message: 'MPG what do you get'
tb2k82ce Lifetime Member
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Lemon Grove, CA - USA

Vette(s):
1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.

Joined: 10/17/2007
Posts: 2007
I'm hoping that the mileage I'm getting on my stock 82 is not normal and I can fix it.  First I need to know what is normal.  I would bet there are others that would like to know this also and I know that it was done years ago.   Did they post mileage on cars when C3's were new?  I do not think so but if so does anyone have that data?

If you please could we have what you are running and if it is not basically stock what you have done that could affect mileage, what the car is, freeway-open road mileage, Mostly in town mileage, 50/50 Normal mixture of in town and road.

Corvette configuration:  82  stock auto transmission
Mileage Freeway: 12 mpg Angry
Mileage in town: unknown
Mileage 50/50: 11mpg Cry


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7/19/11 3:56pm - Reply: 'MPG what do you get'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
I have a '69 427/435...3 carburetors, M21 transmission, L88 camshaft, 4.11 rear axle.

Mileage?  6mpg...doesn't matter whether I drive it highway or around town, fast or slow...the mileage doesn't change.  I get roughly 125-150 miles to a tank of gasoline.

Smiles per mile?  Off the chart!


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Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

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7/19/11 4:09pm - Reply: 'MPG what do you get'
manchestershark Lifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

Joined: 10/31/2007
Posts: 1895
Smile Basic stock 350. M-20  3.36 rear.  The trip to Effingham bout 12-13. Did an adjustment on carb on the road, then got 18-19 rest of trip. Home on the hills, bout 15-16.

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7/19/11 4:17pm - Reply: 'MPG what do you get'
Jaws79 Lifetime Member
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Sykesville, MD - USA

Vette(s):
1979 Corvette Coupe Corvette Light Blue Midnight Blue interior Mirrored Glass T-tops

Joined: 4/27/2008
Posts: 4211
Have never done much around town driving to check it, but my basically stock 79 L48 with the 3.55 rear gets about 14 mpg on the highway. It's good to have a 25 gal. tank, though!  Thumbs Up  
 
Barry
 
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7/19/11 5:51pm - Reply: 'MPG what do you get'
kwoody
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Tucson, AZ - USA

Vette(s):
1982 Black/Tan Leather Build Code C09E Bronze TTop CrossFire Fuel Injection L83 85 Fuel Pump Auto Axle 2.72 Firestone Firehawk Indy500

Joined: 7/11/2010
Posts: 415
Hi Gilbert,

I got 18.5 MPG on the last road trip (220 miles or so) at 70-75 MPH.  That is before the new plugs.  The next tank will give me mostly around town numbers. Update:  Around town the next tank gave me 16.25 MPG.  Around town is really 65 MPH for 25-30% of the time and Stop and go fast for the rest..... I found the timing was set for 12* and I just reset it to 10*. It runs a bit hotter now but, seems smoother getting to 40-50 MPH.

82 CFI only mod is a 85 higher pressure/flow fuel pump.  59,000 miles

This is my original EPA sticker info: Click link for larger version.
http://209.200.117.236/member_uploads/14401_14500/14492/82CFI_EPA_STICKER.jpg

kwoody2011-07-24 08:20:47

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7/19/11 6:07pm - Reply: 'MPG what do you get'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
[QUOTE=kwoody]

[/QUOTE]
$1.65 a gallon wow was gas ever that cheap? Actually I remember haveing to pay .45 cents for a gallon of gas for my mini bike, and no it did not have wooden wheels.LOL
Effiningham trip was all over the place 15, 18, and the best was 21mpg just after I put the new coil in Confused 
Evil Smileebo


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7/19/11 7:23pm - Reply: 'MPG what do you get'
Iron82 Lifetime Member
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Vette(s):
1982 Collector Edition #3413

Joined: 7/24/2003
Posts: 2150
My 82' CE is stock and numbers matching.   This is with my driving techniques.
 
Town is stop and fast take off 13mpg and stop and slow take off 16mpg. 
 
Highway mileage is 70mph steady with cruise on/off 26mpg, 75mph steady with cruise on/off 24mpg.  At times I tend to play on the highway...  Tongue  so it varies.  I have gone 400 miles without stoping for gas and that's when my low fuel light (2 gals left) came on.  Clap
 
Hope this helps your problem.


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IRON 82
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7/19/11 8:47pm - Reply: 'MPG what do you get'
manget1 Lifetime Member
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Indianapolis, IN - USA

Vette(s):
Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 42K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible - DAILY DRIVER!!

Joined: 9/3/2006
Posts: 2382
14-16 is an average on my 74 L-82 4 speed.  I stick around 70 on the highway on trips

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7/19/11 10:19pm - Reply: 'MPG what do you get'
dwright Gold Member
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Victor, NY - USA

Vette(s):
2004 Commemorative Edition Coupe, Auto w/HUD. 13K miles in 2015. Sold 1982 Red Coupe

Joined: 7/12/2004
Posts: 6756
Stock '82.
Cruising at 65 mph- 25+
Cruising at 75 mph- 20-22
Stop and go, easy on the pedal- 19-21
Driving the Tail of the Dragon- 12, but loved every foot of it.
With the AC on it drops a little.


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7/20/11 3:07am - Reply: 'MPG what do you get'
DaveM Lifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.

Joined: 1/27/2004
Posts: 2530
When I had the stock Cross-fire I got about 25 highway, around 70 mph. Around town I got about 17. With the new ZZ4 engine, 3.55 rear, I get about 20-21 highway and about 15-16 around town.
Your's is way off the mark. Hope you find whats causing the low mileage.
Dave


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Dave's '82


   
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7/20/11 7:04am - Reply: 'MPG what do you get'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
Ive never driven mine on an extended road trip (perhaps the next C3VR gathering Tongue) but around town Im getting between 17 and 18mpg.  Stock crossfire except running 85 fuel pump with a regulated pressure of 14.5 psi.

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7/20/11 8:20am - Reply: 'MPG what do you get'
manchestershark Lifetime Member
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Equinunk, PA - USA

Vette(s):
1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.

Joined: 10/31/2007
Posts: 1895
Clap GREAT post.  Sounds like our numbers are pretty consistant. I have been wondering how I compared to the other drivers. THANKS for putting it up.

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7/20/11 11:35am - Reply: 'MPG what do you get'
tb2k82ce Lifetime Member
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Lemon Grove, CA - USA

Vette(s):
1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.

Joined: 10/17/2007
Posts: 2007
When we get some more I will put them all in a list so it will be easy to digest.  Then I'm going to be asking for ideas on why mine is so bad.  But that is another post question.

Thanks for all of the inputs so far.  I know there are others out there for other years just send them in and I will put them together.  When this falls off the 24 hour list.


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7/20/11 12:13pm - Reply: 'MPG what do you get'
Adam Wartell Lifetime Member
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Eagleville, PA - USA

Vette(s):
Used to own a 1979 Corvette now owned by JB79

Joined: 11/1/2001
Posts: 14684
For those of you with smartphones, check out an app called "FuelLog." 
At each fill up you just plug in a few pieces of info and it will start calculating your MPG along with a bunch of other stats.  I know it is available for Android, not sure about iOS.


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7/20/11 12:28pm - Reply: 'MPG what do you get'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395
[QUOTE=Adam Wartell]For those of you with smartphones, check out an app called "FuelLog." 
At each fill up you just plug in a few pieces of info and it will start calculating your MPG along with a bunch of other stats.  I know it is available for Android, not sure about iOS.
[/QUOTE]
I'm thinking out of all the people here you are getting the best Vette gas mileageShocked
Evil Smileebo


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7/20/11 1:07pm - Reply: 'MPG what do you get'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
The '74 gets around 16 if I treat it nice on the road...which I usually do NOT. 70-75mph anywhere I'm headed...end of story. So...my real mileage is closer to 12-14mpg.
The '85 will cruise all day with the A/C blasting, 70-75mph, and get 25-26 mpg.


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Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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7/20/11 1:43pm - Reply: 'MPG what do you get'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
Ive only checked mine one time and that was last fall. I was happy as can be when I found I was getting just over 19. I checked it twice during that trip just to make sure. I still have trouble believing it. 350 bored .030 with small cam, edelbrock 2101 intake, Summit heads, Factory quadrajet, Headers, 400 turbo trans with 308 gears.
Rodney


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7/20/11 6:02pm - Reply: 'MPG what do you get'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
[QUOTE=rod7515] ...with 3.08 gears. [/QUOTE]

And there you have it!


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Joel Adams
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7/20/11 6:28pm - Reply: 'MPG what do you get'
TargaBlue72 Lifetime Member
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Lodi, WI - USA

Vette(s):
1972 Targa Blue, T-Top, Saddle leather, 350 auto,numbers match, all original except '69 factory side exhaust. Previously owned: 1969 427, 390hp, 4sp, Riverside Gold coupe, factory side exhaust

Joined: 9/25/2007
Posts: 326
My 72 stock 350 with TH 400 auto always got about 15 HWY and considerably less in town.
A few years ago I installed a HEI distributor and upgraded plugs and plug wires.
On the 900 + mile trip to Effingham last May, I averaged a little over 17.  I was really surprised.Smile
Didn't think it would make that much difference.

Dean


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7/20/11 7:52pm - Reply: 'MPG what do you get'
hmel '74
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Carlisle, PA - USA

Vette(s):
1974 mille miglia red with oxblood interior 355ci, 320hp

Joined: 9/4/2005
Posts: 533
[QUOTE=dwright]Stock '82.
Cruising at 65 mph- 25+
Cruising at 75 mph- 20-22
Stop and go, easy on the pedal- 19-21
Driving the Tail of the Dragon- 12, but loved every foot of it.
With the AC on it drops a little.
[/QUOTE]
have I told you lately that I hate you, Dave? Wink


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 Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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