LT1-LT4 Modifications 1993-97 Gen II Small Block V8

gas mileage

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Old 02-27-2011, 04:24 PM
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Default gas mileage

What kind of gas mileage does everyone get with there lt1
Old 02-27-2011, 05:47 PM
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I've seen anywhere from 10 to low 20 mpg depending on where and how I'm driving.

~Edit~ I tend to accelerate briskly from most stops

Last edited by ZFreie; 02-28-2011 at 12:24 AM.
Old 02-27-2011, 05:48 PM
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I get about 15 in town and low 20s on the hwy, but mine's mostly stock.
Old 02-27-2011, 06:43 PM
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My car did 26.4 on a 170 mile trip. There were a few times that I messed around with an HHR SS that a friend was driving on the same trip. I figured that was pretty good considering I had a couple races.
Old 02-27-2011, 07:14 PM
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On the hwy I do 21-22 in town I get about 15
Old 02-27-2011, 07:19 PM
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I average 16mpg city/hwy. I best 19.3 mpg when I did I95 driving a 80 mile one way trip, than did a 250 ft burnout than drove on 611/broad street which was bumper to bumper in philly. So I think I could have netted 21mpg if I didnt goof off. That was with a mail in tune and a t56 with 3.42s

Now its dyno tuned, and will have a 4.10s as of this saturday. Should net me better mpg.
Old 02-27-2011, 07:34 PM
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I was getting 22 mpg avg when I had to commute 50 miles each way. Then I moved to 6 miles from work and now I get 11 MPG avg. Oh well, I spend a lot less on gas now either way.
Old 02-27-2011, 07:36 PM
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never cared to see what mpg i was getting in my LT1. but i would say not very good lol
Old 02-27-2011, 07:52 PM
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I'm averaging 12 to 14 all around anywhere from 175 to 240 to tank
Old 02-27-2011, 08:24 PM
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15-17 city. 20ish highway. All depends on how i drive.
Old 02-27-2011, 10:23 PM
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Also 15-17 city, 20-23 highway
Old 02-27-2011, 10:28 PM
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I can't believe some of the poor numbers here. On the highway, driven correct, I just got 26mpg.
Old 02-27-2011, 10:45 PM
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Originally Posted by 3DFORMULA
I can't believe some of the poor numbers here. On the highway, driven correct, I just got 26mpg.
Most guys in this thread are autos.

My old auto camaro with bolt ons and 373s got around 19.5 mixed driving.

Then I had a hotcammed and bolt on camaro with 410s and It got around 12 mixed.

I have an M6 car now Im hoping to get over 20.

On a side note my grandpa has a 94 vette that gets around 28 on the highway, auto with 273s.
Old 02-27-2011, 10:51 PM
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I see, you should be good for over 20mpg(when driven correct)
Old 02-28-2011, 12:17 AM
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Yeah I talked to a lady that has a 93 vett and she was getting almost 30mpg wish I was getting that
Old 02-28-2011, 10:32 AM
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Originally Posted by 3DFORMULA
I can't believe some of the poor numbers here. On the highway, driven correct, I just got 26mpg.
Second that. My best was 26 on a road trip. Just happened to check it yesterday and was 19. Thats about 75% city. . .
Old 02-28-2011, 10:41 AM
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6 in the city and 12 on the highway.........

and .35 with my foot to the floor

Old 02-28-2011, 11:05 AM
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in the summer i get 16-17. i see no highway use, and i like to have some fun. thats about 5 miles each way to work, so its not too bad.

my supercharged 3.8 gets the same in the winter and thats 99.9% conservative driving with winter blend.
Old 02-28-2011, 12:37 PM
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When it was stock, with the M6 and zero mods other than ORY and Moroso cold air, it got about 26 on the highway, 16-18 in town.

Now with the mods in the sig probably 20 highway and 10-12 in town depending on how I'm driving.
Old 02-28-2011, 12:59 PM
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Hell I would love to get 10-12 around town. My car sucks it down like it's free! I think I get between 6-10. When I was data logging the other day it was in open loop for the entire 15 minute drive. That may be why I need to look further into it.


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