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    Author Topic: What kind of gas milage do you get with your Mopar Muscle car?  (Read 5526 times)

    Offline EVIL72

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #30 on: January 07, 2007 - 09:49:32 PM »
    Quote from: Dave-R on January 07, 2007 - 09:16:58 AM
    Just a point that might have been said already but I missed?

    If you select the axle gears that allow you to cruise at your highway speed, at the same rpm as your engine makes peak torque, then you will get the best gas mileage.
    Maybe this is a big part of why some of the big blocks seem to be getting better mileage than some of the small blocks here.

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    ROB
    1972 Dodge Challenger 340ci
    1970 Pro Street Duster (Under Construction)


    Offline dwbiggs

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #31 on: January 08, 2007 - 08:56:17 AM »
    Gas mileage is irrelevent.
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    1974 Challenger Rallye - 440+.040, 0 decked, 10.5:1, Ross Pistons, Hughes 3844 cam (238/244, .536/.540), Eddy RPM manifold, Eddy aluminum heads, Holley 750, TTI headers, .96" T-bars, IAS shocks, 1 1/8" front sway bar, 3/4" rear sway bar, XHD 6 leaf springs, Firm Feel stage 2 steering box.

    Offline Dave-R

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #32 on: January 08, 2007 - 12:31:22 PM »
    Quote from: dwbiggs on January 08, 2007 - 08:56:17 AM
    Gas mileage is irrelevent.

    True. But $6.50 a gallon hurts the pocket big time. :crying:
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    Offline 440Charger

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #33 on: January 08, 2007 - 01:04:30 PM »
    The less the better!   :cheers:
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    I love my 440...but it's not loving me back...yet

    Offline gcone

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #34 on: January 09, 2007 - 09:07:13 AM »
    71Cuda-426, 3.54 rear axle (421 wheel dyno)- With stock 883 trans: 8.5-10.0. With Tremec 5spd: 13.7-17.3
    69Chgr-383, 3.91 rear axle (303 wheel dyno)-With stock 883 trans: 6.5-10.5.
    71Demon-360Stroker, 4.10 rear axle (471 wheel dyno)-With 727 3spd: 4.5-8.5
    70Chevelle-396/350, 3.73 rear axle (312 wheel dyno)-With TH400 3spd:7.5-12.6. With 700R4:9.6-18.5

    True-if we can afford the toys, why b@tch about fuel cost.  On the same hand, if I can save a few dollars in fuel and improve the drive quality, why not?  That's what hot-roddin' is all about!
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    Offline Dave-R

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #35 on: January 09, 2007 - 09:45:15 AM »
    Well the way I see it, if your car is using a lot of gas for its size and power, it probably is not tuned as good as it could be.

    Although, having said that, there is a big fuel consumption difference between best economy and best power.

    So I tune my Challenger to give me around 13:1 air/fuel ratio under all driving conditions (best power ratio for a 440 I have found) and 14:1 at idle.

    I have tuned many carbs for people and many of them are not even on the idle circuits at idle speed. Their throttle blades are too far open at idle due to the bigger camshafts everyone around here uses. Coupled with not enough initial advance (too much advance in the distributor) they burn lots of fuel at idle. Which kills the around town fuel consumption.
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    Offline TreeFrog

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #36 on: January 09, 2007 - 11:10:16 AM »
    Just cranked the Challenger for the first time in about a year and a half....three-fourty single four-barrel ... less than a min. on a quart of gas....

    Since the tank is out of the car I was using a Mason Jar....not sure what road milage is, as I was on jack stands...I thing I will need a longer hose and at least a gallon jug.
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    Offline MEK-Dangerfield

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #37 on: January 09, 2007 - 02:56:18 PM »
    Quote from: TreeFrog on January 09, 2007 - 11:10:16 AM
    Just cranked the Challenger for the first time in about a year and a half....three-fourty single four-barrel ... less than a min. on a quart of gas....

    Since the tank is out of the car I was using a Mason Jar....not sure what road milage is, as I was on jack stands...I thing I will need a longer hose and at least a gallon jug.

    That might get you to the end of the driveway.  :lol: A quart of gas in a minute is ALOT. Were you gunning the engine?


      Mike
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    Mike

    1970 Challenger - SOLD
    2016 SXT+.  1 of 524 SXT+'s in Plumb-crazy for 2016.

    Offline VTMopar

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    • '70 Challenger Convertible, '74 Challenger Rallye,
    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #38 on: January 10, 2007 - 04:15:33 PM »
    Two possible responses:   "DK - DC"  or "WEFI"    (Don't Know - Don't Care!)   or  (When Empty -- Fill It!)

      :bigsmile:


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    Offline BIGSHCLUNK

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #39 on: January 10, 2007 - 04:19:40 PM »
     :roflsmiley: :roflsmiley: :roflsmiley:  ...gas milage????
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    Offline MEK-Dangerfield

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #40 on: January 10, 2007 - 04:27:26 PM »
    Quote from: BIGSHCLUNK on January 10, 2007 - 04:19:40 PM
    :roflsmiley: :roflsmiley: :roflsmiley:  ...gas milage????

    I guess VERY few of us have anything to brag about, but I would like to hear from someone that has a 70 E-Body with the slant-6. I'm just wondering if it could hit 20MPG on the hiway, or not.  :clueless:


      Mike
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    Mike

    1970 Challenger - SOLD
    2016 SXT+.  1 of 524 SXT+'s in Plumb-crazy for 2016.

    daves70

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #41 on: January 10, 2007 - 04:32:02 PM »
    Quote from: BIGSHCLUNK on January 10, 2007 - 04:19:40 PM
    :roflsmiley: :roflsmiley: :roflsmiley:  ...gas milage????
    :iagree: :grinyes:440-SIXPACK- :scared:
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    Offline duodec

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #42 on: January 11, 2007 - 12:08:26 AM »
    My '71 Challenger (318-2V, automatic, 2.6 gears) used to get 15-16MPG on Union 76 leaded premium, city or highway.  It had dual exhaust on stock manifolds, and the Direct Connection electronic ignition kit, and if I remember correctly had initial and vacuum advance tweaked for best performance with premium; it pinged on regular.
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    Offline 70RTdroptop

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    • 1970 Challenger R/T 440-SixPack
    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #43 on: January 12, 2007 - 07:28:02 PM »
    In a word, crappy. In two words, REAL crappy. 440sixpack, 3.55 gears, automatic, about 8 or 9 miles a gallon. But I'll be the first to admit that I don't waste any time nailing the gas pedal to the floor whenever I can. It's not about the mpg, it's all about getting that big grin on your face! :biggrin:
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    1970 Dodge Challenger R/T 440-6 convertible
    1966 Ford Mustang convertible  - numbers matching (wife's car )

    Offline Oldschool

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    Re: What kind of gas milage do you get with your Mopar Muscle car?
    « Reply #44 on: January 12, 2007 - 07:52:23 PM »
    Quote from: 70RTdroptop on January 12, 2007 - 07:28:02 PM
    It's not about the mpg, it's all about getting that big grin on your face! :biggrin:


    This is the look on your face when you nail the "go" button---   :bigsmile:

    This is the look when you pull out your wallet to pay for the gas---    :scared:   or     :22yikes:   or    :swear:   or    :stomp:     etc...............   
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    Ken  --  In Georgia

    MOPAR-------"Built To Run------Here To Stay"
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