Hey all, '96 Z here but I'm trying to get some information about what kind of fuel consumption the true muscle cars got. I can obviously take a guess it wasn't great (by today's standards) but im still interested in some fairly real numbers that people have noticed. Your response is much appreciated b/c this is for a sociological paper and i cant seem to find mpg stats anywhere!

 

78 Trans Am, 400 motor, severely detuned from factory, and only got 12 mpg, I'll see teens on the highway only.....When motor is done, I hope I will have double digits.......
My mom has a '70 charger, 383, low output (8.5:1 compression), used to be 2 bbl, now 4 bbl+ cam/intake, gets about 12 mpg......Father's '66 charger, 318 2 bbl carb, about 16 mpg city, almost 20 hwy! Friend's '63 vette, 327/340hp, probably around 10 mpg......

 

I'm with AJ on this one. My 77 Trans Am gets about 12 mpg as well.

 

Definately not a true musclecar, but my 78 Nova with a 305 2bl gets an average of 14mpg unless I really hammer it all the time, then it dips down to ~10mpg.

 

I have a 79 Z28 with a 325 horse 355 with a 670 Holley Avenger carb and I get 18 mpg, of course in Canada we have a different sized gallon than you Yanks.

 

1980 Z28, stock
Standing 1/4 mile: 16.4 sec. @ 86 mph
Standing 1/4 mile: 16.09 sec. @ 84.6 mph w/3.42 & A/T
Top Speed : 120 mph
70 - 0 mph: 196 ft. (0.85G)
Fuel Milage: 14 mpg
Interior sound level: 57 dBA @ Idle, 76 dBA @ 70 mph cruise,
85 dBA @ full throttle

1973 Camaro LT Z28/RS, 4 speed, 3.42:1
Standing 1/4 mile: 15.2 sec. @ 94.6 mph
Top Speed (Observed) 123 mph
70 - 0 mph 192 ft. (0.85G)
Fuel Milage: 10.0 - 13.5 mpg/regular fuel
Cruising Range: 180 - 240 miles
Interior sound level: 76 (dBA) / 70 mph cruise, 85 (dBA)/ full throttle

 

My '69 Z-28 with 396 bigblock with LS6 cam and L-87 Heads, Weiand Intake and 750 Holley is thirsty. But it is more or less as thirsty as any other Musclecar from that era.

On Highway running 55 to 60 mph I get about 12 mpg, in citytraffic it is down to about 8 mpg.

With a price for gas at $3.85 here in Sweden it is costly to say the least. In this July I spent $500.00 on gasoline!

Jan



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Jan Suhr
Stockholm, Sweden
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1969 Camaro Z-28 Cortez Silver with 396 BigBlock

http://homepage.mac.com/jannes

 

My old '81 Z28 with the 383 averaged around 12 MPG with the 3.42's, and around 15 MPG with 2.56's. With the 2.56's, it actually wasn't too bad! Although, it wasn't that bad with 3.42's either.....as long as I left my foot off the pedal!!!! I think on a couple long trips with the 2.56's, I got somewhere around 18 MPG - but it was awhile ago, and I can't remember exactly.

HTH!

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2002 Z28 - A4, 2.73's, Blk/blk, leather, T-tops, sport appearance package - just bought on June 26, 2002! - Pics

1981 Z28 - 383, TH350 trans., 3.42 posi - sold August, 2000 - Pics

1973 Camaro - Dad's & my project in the works - to be built: 355 Chevy, 11.5:1 pop-ups, "camel hump" heads (w/2.02 valves), solid cam, 4-speed.....it should be quick! - Pics

 

454 with 4.10 gears. In a 1980 Z28.
Around 4 to 7 MPG depending on how well I was (mis)behavin.

 

77 Camaro, basically stock 350

13 mpg city
17 mpg highway

It does a lot better with the quadrajet than it used to wiht the old 2bbl.

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77 Type LT
rebuilt 350, edelbrock performer intake, quadrajet, dynomax superconverter, dynomax single exhaust, th350, 3.08

AIM:blacksteve919

My Photos
My Sound Clips

 

67 Bird with 400 big block. Just got it about a week ago and it seems to get about 10 mpg.

 

Do you think the bad mileage comes from being carburated?

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1995 3.4L v6 Camaro FIPK Spintech Cat-back.

 

the three speed auto/4 speed manual tranny doesn't help much.

 

I get 24 with 3:42 gears

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Cranberry Red 69
SS Convertible
95 LT-1 / 4L60E

 

I get about 8-12 MPG in mine with 4.11s TH350 and 355ci 450-475hp.... all depends on how heavy the foot is feeling!