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

Anyone care about MPG?

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Old 04-25-2009 | 08:06 PM
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Originally Posted by RamAir95TA
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.
That's how I look at it too!!
Old 04-25-2009 | 11:05 PM
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Originally Posted by rbaksi
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.
Wow, that is really good with an automatic tranny. What octane grade do you fill up with? I forgot to say I use 87.
Old 04-26-2009 | 12:30 AM
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I dont want to know my around town mpg's, im a lead foot around town anyways. but Ive checked my highway mileage before, 450miles on 1 tank which is 32mpg! this was at speeds of 80-120 but 80 for the most part.
Old 04-26-2009 | 12:41 AM
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forged 385cu.in LT1 force fed by an intercooled rear mount turbo.... at 80mph and a needle with just below 2k rpm's.... between 20-23mpg!!
Old 04-26-2009 | 12:52 AM
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I get about 270 miles to a tank with my auto and 373s. Im happy with that. Ill worry about gas when it gets back to 4 bucks a gallon.
Old 04-26-2009 | 01:11 AM
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Don't really keep up with it much any more, but when it was stock I could bearly squeeze out 16 on the freeway. About 85-90 percent of my driving is freeway between 65-75 mph. Now I get some where around 18.
Old 04-26-2009 | 02:37 AM
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Originally Posted by z_speedfreak
I dont want to know my around town mpg's, im a lead foot around town anyways. but Ive checked my highway mileage before, 450miles on 1 tank which is 32mpg! this was at speeds of 80-120 but 80 for the most part.
Hahaha BS!

unless you swapped for a 4 cylinder
Old 04-26-2009 | 03:13 AM
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Running richer than hell, my speedo's off (throws my trip/odometer off), and having a lead foot with mostly town driving, I still average around 13-14. I can't wait to get a retune, so my speedo's correct and I'm not running so rich. Then, I expect to get somewhere in the area of 17-18.
Old 04-26-2009 | 05:44 PM
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Originally Posted by phirepower
Hahaha BS!

unless you swapped for a 4 cylinder
Nice call, lol
Old 04-26-2009 | 06:34 PM
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I dont really care either about mpg's either. Usually i get mid teens in the city. High teens highway.
Old 04-27-2009 | 03:20 AM
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mpg and f body go together i had no idea LOL
Old 04-27-2009 | 08:47 AM
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I'm near stock, I'm usually around 21mpg with a mix of city driving, country roads, and a 7 mile burst of highway everyday on they way to work. At least 60-70% of that is with the top down, which I would think might have a slight negative impact. I don't hammer down to the red line every time, but I probably find a few excuses a day for some WOT gear grabbing action.
Old 04-27-2009 | 10:20 AM
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Originally Posted by phirepower
Hahaha BS!

unless you swapped for a 4 cylinder
no BS, why would I lie. I drove from wellfleet ma to sunapee nh and back on one tank, I cleared my trip before leaving and when I got back to wellfleet and filled up it was right on 450miles. my brother had to fill up his pathfinder twice and he went thru boston and I went around. when I drove to canada one year I burnt 4 tanks on the way up never going faster than 80. but on the way back I was going 120-140 from the border to just outside of boston and only burnt 3 tanks, wish I tracked the miles that time. again why would I lie about this
Old 04-27-2009 | 10:57 AM
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nope.... both vehicles being V8'S = no care...
Old 04-27-2009 | 11:28 AM
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I always do the math in my head when I fill up and I average around 10mpg, 11mpg if I'm lucky. Big stall + gears + aggressive cam = terrible gas mileage but a blast to drive. Our GTO and TBSS both average about 15mpg and the Grand Prix gets 19-20mpg which I consider amazing lol.
Old 04-27-2009 | 11:29 AM
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I only live about 2 miles from work so its all stop in go. I manage 13mpg on average, the one time I went out of town I got 23mpg most of that hwy running around 70-75mph.
Old 04-27-2009 | 11:38 AM
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when I run the car out 4-5 times when it goes out, mixed driving, 16-17. On the last two I've been nice and have gotten ~20 give or take .5, big difference. So, needless to say, I'm a little nicer to it now.
Old 05-08-2009 | 12:52 PM
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I used to get about 21 mpg all around and 25 mpg highway when I had 3.23's and a stock converter. My 3.23 rear end got messed up so I replaced it with a 2.73 rear and put a 3400 stall in at the same time. I now get 18 mpg all around and about 25 mpg highway. I do track my mileage at every fill up but I only do it to see what it is. If fuel economy becomes a concern I just drive my little Toyota Corolla which gets 33 mpg all around and 40 mpg highway!
Old 05-08-2009 | 12:58 PM
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Oops...I just realized after posting that this was an LT1 forum. My bad!



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