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

Anyone care about MPG?

Old 04-24-2009, 09:42 PM
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Default Anyone care about MPG?

I know this sounds stupid, but does anyone on here care about gas mileage enought to track their mileage on the highway. I track mine and do a lot of highway driving. The last tank I did about 90% highway and averaged 27mpg at about 70mph. I also tracked my mileage back when the car was stock and I was barely getting 25mpg at 65mph. I guess the headers, spark plugs, wires, tune, and lighter driveshaft helped. I will have to do another 65mph comparision to see what I average.

What do you guys average when not putting the pedal down?
Old 04-24-2009, 11:20 PM
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I really don't know what I make MPGs but I really don't care lol
Old 04-25-2009, 12:35 AM
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i dont care simply because its better then my impala which gets 8 mpg and is the slowest thing i know

but when i first got my car i got 27 mph highway babying it. but its never seen that again because i put alot of wear on her lol
Old 04-25-2009, 01:29 AM
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Default I love dealerships!

I cannot comment at the moment, because I just determined why my mileage had fallen from about 26 to 29 (depending on my avg. speed; 75 or 60 MPH) to about 21 - my local Chevy dealership Tech miss-connected 4 of my 8 injectors!

The labels on the 2 pin connectors clearly indicate which cylinder the connectors correspond to, but MY technician had the DR side as 3-1-5-7 and the PASS side as 2-4-8-6!!!

I found this error when I installed 38 lb injectors on my LT1 - even without the turbo installed, the thing had a lot more power (and it idled better too!).

I love dealerships!

Originally Posted by camerory
I know this sounds stupid, but does anyone on here care about gas mileage enought to track their mileage on the highway. I track mine and do a lot of highway driving. The last tank I did about 90% highway and averaged 27mpg at about 70mph. I also tracked my mileage back when the car was stock and I was barely getting 25mpg at 65mph. I guess the headers, spark plugs, wires, tune, and lighter driveshaft helped. I will have to do another 65mph comparision to see what I average.

What do you guys average when not putting the pedal down?
Old 04-25-2009, 01:37 AM
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i dunno, not sure if ive ever tryed this "not putting the pedal down" you speak of...
Old 04-25-2009, 07:05 AM
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As long as there still making "GAS" I DON'T CARE.........LOL
Old 04-25-2009, 07:10 AM
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if i cared i wouldnt of bought the car. but the one time i tried i think i came up with lik 12mpg around town
Old 04-25-2009, 07:51 AM
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I'm averaging about 20 highway because of my 3.73s and 80 mph equals about 2800 rpms :-p Another reason the auto. sucks sometimes :-( Around town or on my way into work though which I average 50-60 and keep the revs more reasonable, I get about 24-25.
Old 04-25-2009, 09:16 AM
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never
Old 04-25-2009, 09:58 AM
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i average about 18 mixed driving running pretty rich too.
Old 04-25-2009, 10:07 AM
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I don't really care what the car is getting MPG wise but, I have tracked it and I still average low 20's even with all the work done to the car. That is also mixed driving.
Old 04-25-2009, 10:22 AM
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I average about 18-19 pretty much all city. On highway trips I'd usually get between 24-27
Old 04-25-2009, 10:28 AM
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When it was stock I did, now all I know is the gauge starts moving at 45 miles~ lol.
Old 04-25-2009, 10:36 AM
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Originally Posted by bombebomb
When it was stock I did, now all I know is the gauge starts moving at 45 miles~ lol.
Low 20s here. Which is fine by me.
Old 04-25-2009, 11:00 AM
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I somehow managed an average 33mpg 90% highway last tank. 500kilometers= 310miles
Took 35 Liters to fill it right back up to full full, or 9.2 gallons.

310/9= 33.6 mpg. Doing about 120KPH or roughly 70mph. Perfect day, no wind, nice flat road
Old 04-25-2009, 11:03 AM
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As long as I can drive to the track, make a half-dozen passes, and get home on one tank of gas, I'm cool with that.
Old 04-25-2009, 11:03 AM
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Too depressing to think about anymore LOL
Old 04-25-2009, 03:19 PM
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Its depressing around town, but I've checked it on a trip from NJ to Pittsburgh and I got 31 mpg I couldn't believe it. I was at 1500-1600 rpm the whole time going about 5 over (70mph). On the way back I got 30, and this trip was when gas was $4 a gallon so I was pretty pleased.
Old 04-25-2009, 04:41 PM
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about 17 mpg, rich and 4.10.
Old 04-25-2009, 04:46 PM
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i always keep track of my mileage more to keep an eye on how well the motor is running than to get excited about my awesome fuel economy. all highway i barely squeak out 20 but city is between 10-13

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