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  1. 02-13-2007, 08:09 PM #1
    Ryanater
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    1998 WS6, 1969 Camaro

    Post your mods and Gas Mileage!!!!!!

    I have a '98 v6 and am looking for a ls1 car. But it is going to be my daily driver so I was wondering how much extra gas I will be going through. I have already made up my mind that I am going to get a v8 but I was just wondering.

    My v6 gets about 20mpg city and I can get 30mpg highway.
    Last edited by Ryanater; 02-13-2007 at 08:18 PM. Reason: new title
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  2. 02-13-2007, 08:24 PM #2
    Midnight02
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    Navy Blue Metallic
    2002 Camaro SS

    You shouldn't lose out on too much.

    My modded M6 2002 SS gets around 14 - 17 in the city (depending on how heavy I am on the loud pedal) and 23 - 26 on the highway. The double overdrive gear (6th) gear in the T-56 transmission is a nice cruising gear. At 80 mph, the motor spins at roughly 1,800 RPM in 6th gear (with the stock 3.42 rear).
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  3. 02-13-2007, 08:31 PM #3
    Mr. Luos
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    M6
    Full bolt-ons I got 24 city and 31 highway. (3.42 gears)
    Cammed/bolt-ons I got 22 city and 27.5 highway. (3.42 gears)


    Now...I get 14 city and 19-20 highway. (4.11 gears, 402ci LSx)
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.
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  4. 02-13-2007, 08:45 PM #4
    ATCharming
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    Quote Originally Posted by Mr. Luos View Post
    M6
    Full bolt-ons I got 24 city and 31 highway. (3.42 gears)
    Cammed/bolt-ons I got 22 city and 27.5 highway. (3.42 gears)


    Now...I get 14 city and 19-20 highway. (4.11 gears, 402ci LSx)
    how slow do u accelerate? lol. 31 mpg is awesome!
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  5. 02-13-2007, 08:45 PM #5
    Mr. Luos
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Highway. Set the cruise control in 6th gear and let it go.
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  6. 02-13-2007, 08:46 PM #6
    9t8z28
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    2004 CTS-V

    I get 230 miles with a combination of city and highway.
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  7. 02-13-2007, 08:46 PM #7
    ATCharming
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    Quote Originally Posted by Mr. Luos View Post
    Highway. Set the cruise control in 6th gear and let it go.
    ohhh. still 24 city is amazing. (for a 350 v8 that is)
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  8. 02-13-2007, 08:54 PM #8
    Ryanater
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    1998 WS6, 1969 Camaro

    24 city? thats better than I have ever gotten with my v6!
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  9. 02-13-2007, 10:24 PM #9
    99blueZ
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    it all depends on what kind of city driving. In my super heavy traffic of a large city i get about 13. But on the highway i get about 28. My personal best was 30mpg - and that was at 90mph!!
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  10. 02-14-2007, 05:57 AM #10
    Corey1987
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    Black
    1998 Z/28

    i usually get about 22 combination city and highway, put i tend to drive hard when in town. Lid, LTs y pipe lm2
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  11. 02-14-2007, 06:30 AM #11
    SSwt00SS
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    '18 CTS-V
    '13 ZL1

    K&N
    SLP Lid
    SLP Bellow
    Ls6 Intake
    Patriot Performance Stage II Ls6 ported heads
    Comp Cam: 224/244 .581/.581 112lsa
    Ls2 Timing Chain
    Ls6 Oil Pump: ported and shimmed
    Stainless Steel Long tube headers: AIR/EGR delete
    Pacesetter 3" ORY
    SLP Loud Mouth cat-back w/4"dia 22" long Magnaflow tips
    Hurst Competition Plus 6spd shifter
    Spohn Panhard Rod
    Spohn LCA's
    HP Tune
    -------------------
    409rwhp/388rwtq

    as for gas milage, who the hell knows. all depends on how i use my right foot. but i can watch the needle drop in rush hour traffic...lol
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  12. 02-14-2007, 09:39 AM #12
    secondgearscratch
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    Pewter
    2000 z28

    When you first hear the rumble of the ls1 fire up, you will forget the words gas and mileage as a statement. get the ls1 and dont ever look back. i drove 250 miles from kansas to missouri when i got the z and upon arrival at home i had a hair less than half a tank. damn. my 02 zr2 got about 18 on the highway. so in conclusion, the ls1 is.....no word can do it justice.
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