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Re: 426 hemi mpg what are you getting in yours
[Re: maxie]
#31609
11/23/10 05:11 PM
11/23/10 05:11 PM
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Joined: Jan 2003
Posts: 8,393
Highland, MI.
Sunroofcuda
master
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master
Joined: Jan 2003
Posts: 8,393
Highland, MI.
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Back in the era when I used to have my '71 Hemi Charger (1980-84), mine would always get around 12 MPG around town, & 16 on the highway. That car ran like a swiss watch!
No Man With A Good Car Needs To Be Justified
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Re: 426 hemi mpg what are you getting in yours
[Re: maxie]
#31611
11/23/10 07:41 PM
11/23/10 07:41 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
I have just under 225 miles on the car so far. I didnt build it for fuel economy, but I thought it would be better than what it is. I am getting between 7-8 mpg out of the car so far. How you others doing with yours.
my set up is
426 siamese block
10.25 to 1 j and e piston
manely rods
eagle crank
426-2 indy intake
850 mighty demon
comp cams 508/519 235 at 50 mechanical cam
msd
2 1/8 hooker super comps
3 inch flowmaster exhaust
bowl and pocket work on the mopar aluminum heads
dana 60 with 3.54
4 speed
29.5x15.5x15 rear tire
2850-3000 rpm's at 70 mph
car weighs in at 3640 with a 1/2 tank
What do you think and how are yours doing. This is still a lot better than my max wedge was doing.
Just over 200 miles from a tank. somewhere around 14.6mpg (Imperial gallons=15.75 Imperial gallons to a tank)
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Re: 426 hemi mpg what are you getting in yours
[Re: rr74cuda]
#31615
11/24/10 01:19 PM
11/24/10 01:19 PM
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Joined: Jan 2003
Posts: 1,938
Sonora CA
Mopar_Rich
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,938
Sonora CA
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I get 13.9 MPG with my 572 EFI HEMI. But I had to do some special EFI tuning to do it. Running very lean at low load conditions. Lots of spark advance at low loads. Shut off all the injectors on an decel. Hold back on the acell fuel (pump shot) unless you mean it. I run 91 octane, push button 727 trans and 3.70 rear gear. 
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Re: 426 hemi mpg what are you getting in yours
[Re: rr74cuda]
#31616
11/24/10 02:27 PM
11/24/10 02:27 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
Mine gets great gas mileage from me pushing it around on the stand. Dont know how many calories an hour though and I seem to produce less torque than I use to. Of course the engine is a 66 and I am a 60 model 
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Re: 426 hemi mpg what are you getting in yours
[Re: Mopar_Rich]
#31617
11/24/10 02:28 PM
11/24/10 02:28 PM
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Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
torkrules
I'm neurotic
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I'm neurotic
Joined: Nov 2003
Posts: 2,715
closer to Canadian beer!
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Quote:
I get 13.9 MPG with my 572 EFI HEMI.
But I had to do some special EFI tuning to do it.
Running very lean at low load conditions.
Lots of spark advance at low loads.
Shut off all the injectors on an decel.
Hold back on the acell fuel (pump shot) unless you mean it.
I run 91 octane, push button 727 trans and 3.70 rear gear.
show off 
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Re: 426 hemi mpg what are you getting in yours
[Re: max]
#31620
11/24/10 11:08 PM
11/24/10 11:08 PM
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Joined: Jan 2003
Posts: 1,030
JAX FLA
Curt
super stock
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super stock
Joined: Jan 2003
Posts: 1,030
JAX FLA
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Kinda related...but not really... I drove a 08 duramax diesel w/allison on a 6.7 mile test drive today...trip computer said I used 1.3 gallons...I was in it a little
Oh yeah the best I got was a solid 10MPG 525 cube Stage V heads and intake, 245@ and about 550 lift. 354 Dana in E-body.
Curt
Oh yeah...THAT'S gonna leave a mark!
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Re: 426 hemi mpg what are you getting in yours
[Re: Dartman440]
#31622
11/08/12 01:01 AM
11/08/12 01:01 AM
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Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Quote:
I get 16 miles to the gallon in a 69 RR 472 Crate motor with a single 4 barrel and 850 Holley with a Keisler 5 Speed and a 4:10 rear doing 75MPH @2200 RPM.
Same here,....the last few 472's that I fabricated 6 bbl inductions for, running Keisler TKO's .64 OD with 3:54 to 4"10's would avg about 16-18 MPG crusing at approx 80 MPH on cross country events
Mike
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Re: 426 hemi mpg what are you getting in yours
[Re: az426john]
#31624
11/08/12 11:02 PM
11/08/12 11:02 PM
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Joined: Jun 2004
Posts: 1,672
Virginia
HemiStan
top fuel
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top fuel
Joined: Jun 2004
Posts: 1,672
Virginia
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Quote:
You guys will probably call me a liar but years ago when I move back here I drove my Hemi GTX back following my wife. She drove 55 to 60 and I never got out of the back 2 barrels. I got an honest 19mpg. I had a mild hydralic cam in it, quick advance curve in the distributer, 2" headers, 4-spd, 3.54 gears, and LR60-15's. That's the only time I ever drove it that nice, it about killed me. Dave
I am the current caretaker of Dave's GTX. The Hemi is currently 472 ci with the stock carbs, a very old (1969?) outdated and unefficient Sig Erson cam with lots of duration, and a very heavy foot on my part. I drive this car ALOT. All over New England this summer and down to NC a couple weeks ago. Even with my hard driving, she still manages just shy of 12 MPG. I am amazed! I really think that even with the current set-up, I could get 14 MPG if I would just calm down for a bit. But, that is probably not going to happen.
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in there. 
