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Re: slant 6, fuel mileage. what should i get?
[Re: elmor]
#54935
03/30/09 10:59 PM
03/30/09 10:59 PM
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Joined: Apr 2007
Posts: 1,261
ILL
mark7171
pro stock
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pro stock
Joined: Apr 2007
Posts: 1,261
ILL
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Quote:
There is a local guy that runs a 225 in 65 Valiant wagon. He's running with the big blocks at the local strip. Knocks down mid to low 12's consistently. They will run hard with some TLC! 
that is almost impossible.
9+ to 1 compression I6. 4.88 gear. mechanical cam MP4286681. race everything. Abody stripped to less than 2750 lbs. 4 speed. no rear brake contact. no front bearing drag. suspension set for drag only.
You get....high 14's
....and no mileage worth typing. Save your money.
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Re: slant 6, fuel mileage. what should i get?
[Re: mark7171]
#54936
03/31/09 12:27 AM
03/31/09 12:27 AM
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Joined: Jan 2009
Posts: 189
Plano, Texas
Dallasdart
member
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member
Joined: Jan 2009
Posts: 189
Plano, Texas
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it's been a while since I have been in the slant forum but I know there are several A body guys running 12's. It's possible, just very $$. I had a 66 dart with a slant and a 3 on the tree. Loved that car and after I rebuilt the tired motor it was a strong car.
72 Dart Swinger 360 Project
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Re: slant 6, fuel mileage. what should i get?
[Re: mark7171]
#54937
03/31/09 07:57 AM
03/31/09 07:57 AM
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Joined: Oct 2003
Posts: 411
Texas
vynn3
mopar
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mopar
Joined: Oct 2003
Posts: 411
Texas
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Re: slant 6, fuel mileage. what should i get?
[Re: dulcich]
#54938
03/31/09 08:21 AM
03/31/09 08:21 AM
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Joined: Jan 2008
Posts: 2,560
ILLINOIS
volaredon
master
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master
Joined: Jan 2008
Posts: 2,560
ILLINOIS
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Quote:
Stock slant gets about 18 mpg average if everything is right. Very inefficient motor.
-dulcich
  go tell the rest of the guys how "inefficient" the /6 is over on the /6.org board and be ready for a flame war! I've had efficient ones and inefficient ones just like I have with V8s. My Dad had an 82 Gran Fury in which I had PLENTY of seat time in that got 28 MPG over the road (NO I am NOT dreaming) /6. Ive seen lotsa "modern" V-6s with all their computer BS and injection that can't do that!!!
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Re: slant 6, fuel mileage. what should i get?
[Re: B5 Bee]
#54939
03/31/09 09:31 PM
03/31/09 09:31 PM
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Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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Quote:
My '68 V200 gets 25mpg at 65mph. 225, 904, 2.94peg, 185x13 tire
What is a V200?
Quote:
I have a 225 in a 74 Duster automatic with 2.7 gears and it gets 20-25 which is about the same as my 94 Chysler New Yorker with the 3.5.
Mitch
Have similar cars. 225 in a 65 Belvedere and a 94 LHS. Nice thing about the 65 is even if you city drive it and drive it hard it's still gets 20 mpg. Mid 20s are average for highway and our best tank is a straight Full to Empty at 70 mph, was 26 mpg. Odometer was confirmed against GPS.
As for comparing it to the LH with a similar size engine. Our mileage is also around the same numbers. I've seen the mileage in the teens when city driving the LHS but have also seen 29 straight highway. The biggest difference is the performance. 65 ran a 19.9, the LHS is 15.8 in the 1/4.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: slant 6, fuel mileage. what should i get?
[Re: patrick]
#54940
03/31/09 09:37 PM
03/31/09 09:37 PM
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Joined: Jul 2008
Posts: 30,632
Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Quote:
my bone stock '76 with a 225 1bbl, A833OD, 3.21 gears and 25" tall tires knocks down 19-22mpg city, 25-28mpg highway with a best of 32. a lot of people actually report marginally BETTER mileage after retrofitting the super 6 2bbl setup...
Better MPG than 32 ? .... roger that.
Anyone remember a biz called SVI ? ... they did muchO bester !
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Re: slant 6, fuel mileage. what should i get?
[Re: IcorkSOAK]
#54941
03/31/09 09:58 PM
03/31/09 09:58 PM
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Joined: Nov 2003
Posts: 12,528
Western Colorado High Desert
moparmarks
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 12,528
Western Colorado High Desert
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Fact: The 1976 Feather Duster and Dart Sport Light with the 255/883OD were the first US cars to get over 31mpg.
My 75 Dart Sport with an auto got 27-28 highway all day long. My 79 B200 w/ 318 883OD and 355 gears got 25 highway.
If your getting under 20 in an A-body then something is wrong.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: slant 6, fuel mileage. what should i get?
[Re: moparmarks]
#54942
03/31/09 11:00 PM
03/31/09 11:00 PM
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Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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The best I ever did was 29.5 with my 72 Duster. 1bbl 198 long rod short stroke with 3:23's and a 3 speed manual. Usually got 25.4 highway. This is running pump 93. I added a Holley 2bbl from a 318 headers, .090 off the head, lots of porting, really tight lash. It dropped to 22mpg. I swear the 2:74's or 2:76's lug the slant and suck the gas. Dad had a 73 Valiant 4 door that got 13. Slush box PS and air. I was getting about 16 with my 74 auto 2:76 PS 4 door Dart. I reset the lash tighter than stock, tuned it and got 18+ before it sucked a rag into theoil pick up  I have a post with pics running right now. 
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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