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440 gas millage #3096063
11/21/22 02:10 PM
11/21/22 02:10 PM
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fredericksburg,va
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cudaman1969 Offline OP
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Ok boys and girls what’s the best millage you’ve ever gotten out of a 440 past and present? AND how did you do it. I’m planning on using a 74 stock low compression one in my Lil Red truck. I’ll try to make a OD trans work too with the 3.55 rear

Re: 440 gas millage [Re: cudaman1969] #3096066
11/21/22 02:19 PM
11/21/22 02:19 PM
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Wichita
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GY3 Offline
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14 mpg with my '71 Barracuda, 3.23 gears and Holley 750 vacuum secondary. 3.23 gears.

11 mpg with my '63 330. 505", 850 DP and 3.54 gears.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: 440 gas millage [Re: cudaman1969] #3096067
11/21/22 02:22 PM
11/21/22 02:22 PM
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Star Idaho
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67vertman Offline
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I have never had a 440 that got more than 15 miles per gallon, but that is probably because I have a heavy right foot. whistling

My current 440, 500 hp and EFI, 4:10 5sp gets about 12 MPG around town driving with some highway thrown in.

Last edited by 67vertman; 11/21/22 02:23 PM.

My Monster are real!

Living within your means makes life pretty ease.
Re: 440 gas millage [Re: cudaman1969] #3096092
11/21/22 03:26 PM
11/21/22 03:26 PM
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Anchorage, Alaska
metallicareload Offline
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I’m sure you know, the low compression is probably gonna cost you some.

Best I got was 18 or so, almost all highway. 1968 Charger, Holley 3310, A-833, 2.94 gears.


440, 4-Speed, 3.54
1968, when Dinosaurs ruled the Earth
Re: 440 gas millage [Re: metallicareload] #3096099
11/21/22 04:00 PM
11/21/22 04:00 PM
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fredericksburg,va
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cudaman1969 Offline OP
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Back in1970 this dude that was hanging out at the car spots had a 69 Charger RT claimed he got 18-19 on highway. Claimed he worked for Chrysler and was some type of engineer from Detroit area. Never thought much about what he said until now. Gas millage didn’t mean much then when 260 was $.36 a gallon.

Re: 440 gas millage [Re: cudaman1969] #3096100
11/21/22 04:07 PM
11/21/22 04:07 PM
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Calgary, Alberta Canada
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On any of the 440 C bodies I owned . . . best was 15mpg on hiway. Pretty much all had 3:23, stock 70 440 . . .

Re: 440 gas millage [Re: cudaman1969] #3096108
11/21/22 04:45 PM
11/21/22 04:45 PM
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Anchorage, Alaska
metallicareload Offline
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Originally Posted by cudaman1969
Back in1970 this dude that was hanging out at the car spots had a 69 Charger RT claimed he got 18-19 on highway. Claimed he worked for Chrysler and was some type of engineer from Detroit area. Never thought much about what he said until now. Gas millage didn’t mean much then when 260 was $.36 a gallon.


I can believe it. On a long trip back in the day I got 20 or so one way and then 18 or so on the return

Last edited by metallicareload; 11/21/22 04:47 PM.

440, 4-Speed, 3.54
1968, when Dinosaurs ruled the Earth
Re: 440 gas millage [Re: cudaman1969] #3096136
11/21/22 06:26 PM
11/21/22 06:26 PM
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Midwest
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Originally Posted by cudaman1969
Back in1970 this dude that was hanging out at the car spots had a 69 Charger RT claimed he got 18-19 on highway. Claimed he worked for Chrysler and was some type of engineer from Detroit area. Never thought much about what he said until now. Gas millage didn’t mean much then when 260 was $.36 a gallon.



Just as a point of reference, that $0.36 per gallon in 1970 is now the equivalent of $2.84 per gallon today.

So, not as much of a difference between then and now as you would first think.

Re: 440 gas millage [Re: MoparsnMissiles] #3096145
11/21/22 06:59 PM
11/21/22 06:59 PM
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usa
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i'd have to say 10-14 depending on city or highway driving. 3.23 geared b-bodies with torqueflites. i don't believe any of the big numbers; engines are just too inefficient, and who's trying to correct those old speedometers where the factory had them running fast.

Re: 440 gas millage [Re: lewtot184] #3096151
11/21/22 07:17 PM
11/21/22 07:17 PM
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Between Houston & Galveston TX
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I've got a stock '77 440 in my wagon. When it was my daily, 12-14 (mostly city) was the norm. 14-15 was the norm strictly hwy but it did hit 16 a couple of times.

As I've mentioned numerous times, in a truck I used to have I swapped in a stock 440 to replace the truck's 360 and got better all around mileage. shock laugh2


John

Imagine a '73 Satellite Wagon picture here. 😁
Re: 440 gas millage [Re: Satilite73] #3096157
11/21/22 07:37 PM
11/21/22 07:37 PM
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ILLINOIS
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volaredon Offline
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It don't surprise me that much of anything could be at a 360 for mileage. Every one I've had has been a gas sucking pig.

Re: 440 gas millage [Re: cudaman1969] #3096175
11/21/22 08:54 PM
11/21/22 08:54 PM
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N.W. Florida
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Fat_Mike Offline
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Originally Posted by cudaman1969
Ok boys and girls what’s the best millage you’ve ever gotten out of a 440 past and present? AND how did you do it. I’m planning on using a 74 stock low compression one in my Lil Red truck. I’ll try to make a OD trans work too with the 3.55 rear


This is proof that there IS such thing as a dumb question.










Just kidding..........kind of.

Last edited by Fat_Mike; 11/21/22 08:56 PM.
Re: 440 gas millage [Re: Fat_Mike] #3096184
11/21/22 09:25 PM
11/21/22 09:25 PM
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fredericksburg,va
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cudaman1969 Offline OP
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Originally Posted by Fat_Mike
Originally Posted by cudaman1969
Ok boys and girls what’s the best millage you’ve ever gotten out of a 440 past and present? AND how did you do it. I’m planning on using a 74 stock low compression one in my Lil Red truck. I’ll try to make a OD trans work too with the 3.55 rear


This is proof that there IS such thing as a dumb question.










Just kidding..........kind of.

Ok. What’s the dumb part?

Re: 440 gas millage [Re: cudaman1969] #3096190
11/21/22 09:41 PM
11/21/22 09:41 PM
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Cruising!
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It was many years ago and I was young, but my Father had a 440 powered C-body with a functioning lean burn system. I recall that he was very impressed with that big engine's economy in such a large car. I think he was getting 14 or 15 mpg with it. What ever the exact number was, it was several mpg better than any of his previous big blocks. I don't recall why, but he did not keep that car very long.

Re: 440 gas millage [Re: cudaman1969] #3096212
11/21/22 11:05 PM
11/21/22 11:05 PM
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NW Illinois
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MoonshineMattK Offline
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72 Charger, 72 New Yorker 440
CH4B intake, 600 Holley 1850
Electronic dist with vacuum advance
Stock untouched bottom end with windage tray. 2.14 /1.81 new valve job pocket ported. Hooker headers
Comp flat tappet with I think .450 Lift. Maybe could find the card
TKO 5spd with the .82 OD 2.76 rear gear
Could easily pull more overdrive gear. .82 was a mistake. Pulled the original 3.23 and installed the 2.76
Steady highway gets 18mpg

Last edited by MoonshineMattK; 11/21/22 11:12 PM.
Re: 440 gas millage [Re: Satilite73] #3096240
11/22/22 07:06 AM
11/22/22 07:06 AM
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Stock '72 440, TQ, vac advance, 3.23's in a '70 E-body gave solid 16+ in mostly highway cruises keeping it under 70.

Re: 440 gas millage [Re: koak] #3096320
11/22/22 01:03 PM
11/22/22 01:03 PM
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north of coder
moparx Offline
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i kind of figured the smiles per gallon were the measuring system for cost. biggrin
beer

Re: 440 gas millage [Re: cudaman1969] #3096346
11/22/22 02:41 PM
11/22/22 02:41 PM
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Atlanta, GA
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Originally Posted by cudaman1969
Ok boys and girls what’s the best millage you’ve ever gotten out of a 440 past and present? AND how did you do it. I’m planning on using a 74 stock low compression one in my Lil Red truck. I’ll try to make a OD trans work too with the 3.55 rear


If mileage from a 440 is your primary concern, you will have to buy some KB quench pad pistons for open chamber heads, or build it to zero deck with some dish pistons to run withclose chamber heads.

There is some good info on the site about using the KB pistons and the resultant jump in gas mileage.

Re: 440 gas millage [Re: cudaman1969] #3096367
11/22/22 04:11 PM
11/22/22 04:11 PM
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N.W. Florida
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Fat_Mike Offline
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Originally Posted by cudaman1969
Ok. What’s the dumb part?


Not dumb, just my particular sense of humor relating to gas mileage and a 440 cubic inch motor.
Didn't intend to get you off topic...

Re: 440 gas millage [Re: Fat_Mike] #3096397
11/22/22 07:11 PM
11/22/22 07:11 PM
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fredericksburg,va
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cudaman1969 Offline OP
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Originally Posted by Fat_Mike
Originally Posted by cudaman1969
Ok. What’s the dumb part?


Not dumb, just my particular sense of humor relating to gas mileage and a 440 cubic inch motor.
Didn't intend to get you off topic...

NO problem thought I was missing something, we good. For the post above what about the 70 6 pac piston with a 452 head vs the way down in cylinder 74 piston (8 to 1) I have the whole external balanced assembly I could use.

Last edited by cudaman1969; 11/22/22 07:11 PM.
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