What is your MPG?
12-11-2012, 04:21 PM
#23
Instructor
Sorry Guys its not a Corvette but a 71 Chevelle.
Around 3600 lbs, 496 BBC, in the neighborhood of 675 FHP, 6 speed Magnum, 4.56 gears (see the combo in my signature). In town driving will be 10 to 11 mpg, and have gotten as good as 14 on the interstate.
Around 3600 lbs, 496 BBC, in the neighborhood of 675 FHP, 6 speed Magnum, 4.56 gears (see the combo in my signature). In town driving will be 10 to 11 mpg, and have gotten as good as 14 on the interstate.
12-11-2012, 04:35 PM
#24
12-11-2012, 04:50 PM
#26
Racer
Thread Starter
What does it run in the 1/4?
12-11-2012, 04:55 PM
#27
Race Director
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68 427/390, turbo 400 with a 3:08 rear end. I've done as well as 18 mpg on a prolonged highway trip if I loaf along at 60-65 mph. 8-10 around town. If I'm jumping on it it gets nothing 
12-11-2012, 05:01 PM
#28
Drifting
OMG - like the kids say == 73-454 with 3:55 gears, T400 and running an Edelbrock 750 cfm carb, I would guess about 8 in town and 12 on the highway. But mpg is not really important as we don't build these for mileage.
12-11-2012, 05:11 PM
#29
Racer
Thread Starter
I build mine for mileage and performance. I'm running low 13s at over 100 MPH and still getting over 20 MPG. But, I also drive my car every day that I can. If I was only getting 10 MPG I wouldn't be able to drive it much.
12-11-2012, 05:33 PM
#30
Instructor
I have not had this combo to the track yet. Even though the power is there, I will be hard pressed to get it to hook properly. Running a stick with alot of power, I will never get full potential out of this motor. With some new DOT drag slicks, I would love to be able to crack 10's.
12-11-2012, 06:52 PM
#32
Race Director
24mpg on the highway @ 80mph and 15 in the city with my 427ci 600HP small block, properly tuned carb and OD gear does the trick. I might be getting even better mileage since it started running good with the carb leaned out much more than before.
I was going to a highway mileage check after leaning it out but something came up just as I was about to go on the highway, I could be getting a couple more mpg now.
Without a wideband O2 sensor you will never achieve the best gas mileage
I was going to a highway mileage check after leaning it out but something came up just as I was about to go on the highway, I could be getting a couple more mpg now.
Without a wideband O2 sensor you will never achieve the best gas mileage
12-11-2012, 06:56 PM
#33
Race Director
John,
I have not had this combo to the track yet. Even though the power is there, I will be hard pressed to get it to hook properly. Running a stick with alot of power, I will never get full potential out of this motor. With some new DOT drag slicks, I would love to be able to crack 10's.
I have not had this combo to the track yet. Even though the power is there, I will be hard pressed to get it to hook properly. Running a stick with alot of power, I will never get full potential out of this motor. With some new DOT drag slicks, I would love to be able to crack 10's.
12-11-2012, 07:37 PM
#34
Instructor
Had that issue with my last combo.
Last time I was at the strip (several years ago) I had my old 454 based motor running a Wednesday night drags with all the imports and no track prep. Pulled an awsome 2.7 60ft, pedaled it 3 times and still managed a 13 flat.
Last edited by 71454Chevelle; 12-11-2012 at 07:45 PM.
12-11-2012, 08:44 PM
#36
Safety Car
I took my stock 75 L82 down to see my daughters last month. From San Jose to Orange County, its about a 750 mile round trip. I was averaging 16.25 mpg. Yes I did keep receipts and track of it along the way.
Its better than I thought I would get. Around town its not so good, and I dont bother to check it.
kdf
Its better than I thought I would get. Around town its not so good, and I dont bother to check it.
kdf
12-11-2012, 08:54 PM
#37
Le Mans Master
79 L-82 4 spd, headers, no cats, true dual exhaust, slightly bigger cam, 3.70 gears. Max highway mpg was 15.8 on the way to Carlisle this past August. I'm usually in the 14 mpg range.
12-12-2012, 12:04 AM
#38
Melting Slicks
I'm celebrating the mileage of my Corvette... 10 on a good day. MY a-body (70 Skylark, 455, 4 spd, 3.73 gears) got 5 on a really good day.
12-12-2012, 03:30 PM
#40
74 coupe, L-82, Edelbrock intake, Holley carb, 4 speed, 32 psi tires, 3.70 gears. All I know is that I get about 100 miles per full tank. It equates to about 8 mpg I think. That is mostly around town. Never did a highway trip to determine pure highway mpg. Love driving her though!
Will
Will