FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: unclewill on August 10, 2017, 06:39:51 PM
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Just made a "scientific" run to the Paradox Valley and back - exactly 13 miles per gallon over 110 miles of mixed back road driving with *several* third and fourth gear pulls. Pretty good? How does your FE compare?
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exactly 13 smiles per mile
Fixed that for you. :)
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Shoot that's pretty good man! I'm getting about 9mpg in my 463 powered 67 galaxie, and about 3mpg when I "drive" it. ;D
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I took the camera but didn't film for even a second...this drive was pure self indulgence. The sound of the side dump 3" exhaust is intoxicating, traffic was light, cool temps, great scenery. Smiles indeed.
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pretty unscietific but fresh engine just broke in the cam 390+060
streetmaster intake comp 282 s holley streetavenger 870 cruise o matic
in 64 Galaxie 16 mpg highway cruising 60-65
did some fine tuning since that
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MPG? Don't really know as my '69 F100 is missing the speedo cable. I smile when I drive it, just kinda cringe when I have to pull in and fill it up.....again. 428CJ, 2x4, 4spd, 4.546 gears. Not a good "mileage" combination.
Now the blower car, when I ran 600's on it, would get pretty decent mileage. I drove it 160 miles round trip to Thompson Raceway a few years back. I was pleasantly surprised when it made the trip without filling up(4 spd/3.89 gears). Since I put the 660's on it, well, it's not so good anymore. On well.
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stone stock 63 gal 390 4 sp. with 350s, 12mpg no matter how I drive it.
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13 mpg x 20 gallons gives me 260 miles of theoretical range. Not a Prius, but not bad for an 8.0L engine with no overdrive.
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Best I ever got was 16 out of my '68 F250 Highboy, but that was fresh out of a rebuild with pretty ideal driving conditions (flat highway miles). It had a solid lifter 390, mild build with a 750 Holley and stock S intake. That was with a verified speedometer accuracy. My Galaxie gets about 13-14 in the same conditions, automatic with stock original untouched 390 with dual exhaust being the only upgrade. My Mustang? I don't check it. Don't care either ;D
Driving style has a LOT to do with the results you get. I have friends who could cut that mileage in half, driving the same car on the same stretch of road.
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If you think your FE powered car doesn't get good gas mileage just buy a motorhome and drive it a little. My V10 gas motorhome got 8 mpg once downwind and I thought that was good!
It can suck a 75 gallon tank dry in 375 miles when towing.
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Just made a "scientific" run to the Paradox Valley and back - exactly 13 miles per gallon over 110 miles of mixed back road driving with *several* third and fourth gear pulls. Pretty good? How does your FE compare?
That's pretty good for a lot of cubes. This is with the FiTech? Paradox Valley in southwestern CO?
The 416 in my Highboy has been averaging 9mpg with a 750 vac secondary carb. That's with a 2500 foot elevation change to and from work.
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13 mpg x 20 gallons gives me 260 miles of theoretical range. Not a Prius, but not bad for an 8.0L engine with no overdrive.
LOL. make you not worry about it - F350 7.5L gas + 34' trailer = 6.8 MPG. Dual 18 gallon tanks, switch tanks at 90 miles. 8)
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Ya, my '96 F350/460/auto/4.10 got 7 mpg pulling my 14K trailer. My V10 got 9 mpg, the PSD got 12 mpg. My Mack is around 8 mpg.
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i drove my 66 comet 390 4 speed,3.25 gear to the beach years ago and my friend followed me in his 350 chevyII and he used 5 dollars more gas than i did getting there.back then gas was less than 1 dollar a gallon so he used quiet a bit more than i did,and i was breaking in a new 390 so i ran it at different speeds and kicked the 4 barrel in several times too
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LOL. make you not worry about it - F350 7.5L gas + 34' trailer = 6.8 MPG. Dual 18 gallon tanks, switch tanks at 90 miles. 8)
I want to make a tank to put in the back of my '70 F350 that I pull my 28' trailer with. Something that I can tie into the main cab tank with a short line and valve and refill it as I'm going down the road. It'd actually save me money as well, because gas is always quite a bit cheaper near me than anywhere on the road.
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'63 Merc with TKO500 (.68OD) and 4.10s with mild 390 does 15-16mpg highway. Had a dead stock '66 LTD 2DR hardtop that got 19mpg doing 60-65mph, 17mpg doing 75mph.
It's not really too bad, my 2001 Lightning was lucky to pull 15mpg HWY, 10-11mpg in town.
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I want to make a tank to put in the back of my '70 F350 that I pull my 28' trailer with. Something that I can tie into the main cab tank with a short line and valve and refill it as I'm going down the road. It'd actually save me money as well, because gas is always quite a bit cheaper near me than anywhere on the road.
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I've thought about adding a tank to my F250 too. I've considered adding a three way type of valve to the floor between the seat and the door. Is there benefit to transferring fuel to the cab tank ? Perhaps your fuel pump is inside your tank?
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Most all the camper specials had tank valve next to the door you could switch between tanks plus a switch on the dash to switch sending units so you could see how much fuel you had in each tank. Likely easier then transferring between tanks.
(https://cimg8.ibsrv.net/gimg/www.ford-trucks.com-vbulletin/720x682/80-img_9846_3df141de2c9a0e8ccb573d6474c50d1439607f9e.jpg)
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My 454 Chev powered motorhome ran consistent 7 mpg +/- 1. It was fuel injected and had OD, but weighed 14,000lbs. I wonder if putting an OD trans in the Cobra would be worth the trouble?
Yes, Paradox Valley in SW Colorado.
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I've thought about adding a tank to my F250 too. I've considered adding a three way type of valve to the floor between the seat and the door. Is there benefit to transferring fuel to the cab tank ? Perhaps your fuel pump is inside your tank?
Most all the camper specials had tank valve next to the door you could switch between tanks plus a switch on the dash to switch sending units so you could see how much fuel you had in each tank. Likely easier then transferring between tanks.
My situation is a bit different, it's a '70 dumptruck. I don't want to mess around with installing a 2nd tank under the truck with all the needed stuff to have the ability to switch feeds and read levels in each tank. A simple mounted tank in the dump bed could easily feed into my cab tank because it's above the cab tanks level. Gravity feed the cab tank with the push of a valve. A farmers refueling tank, safely mounted in the dump bed, would work nicely.
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When people ask about the MPG of my 406 '58' Ranchero I kindly remind them that it's not Miles Per Gallon, it's the Smiles Per Gallon. And that is why I have it :) :) :) :) :) :)
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A year ago I was fighting a rich condition on the idle and transition circuits on my 63.5 Galaxie and getting 10.5-11.0 MPG on a good day. Engine is a stroked 428 (462) with low riser 2 x 4, new 750 Quick Fuel carbs, 427 cast iron headers, Comp 280H cam, BW T-10 4 speed and 3.00 rear end. I finally got the rich idle and transition circuits sorted out this spring, I will spare all the details of that fiasco on this post. I just got back from about a 350 mile weekend trip through the bluff country of south east Minnesota and north east Iowa, mostly 2 lane state highways and about 70 miles of interstate. I checked it very close and come up with 14.23 MPG, kind of conservative number as the odometer is just a little stingy. I'm really pleased with the MPG and the way the car runs since the carbs got leaned out. Last hear the AFR was generally in the 11 to 12.0 range going down the road and even less than 11 at idle. Now the AFR is 12-12.5 at idle and 13.7 t0 14.1 going down the road.
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I used google earth and the same gas pump twice. 3.00 rear end gives you much lower cruise rpm I bet. I'm at +/-3200 at +/-70 mph. One quick punch and the car just JUMPS! Pretty smooth though. I'll have to watch my a/f ratio, right now I'm letting the EFI "learn" for a while. I did need to crank up the accel pump in the computer though.
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I got 25 miles per Imperial gallon in my 61 Meteor wagon. All original 332 - 2V, Cruis-O, 3.10 gear and 29" tall tires.
I hope that doesn't plummet with the 3-2V setup or something a hundred or more extra cubes will replace it.
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That's really good Tom! My Subaru wagon with a turbo four doesn't do much better than that!
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I got 25 miles per Imperial gallon in my 61 Meteor wagon. All original 332 - 2V, Cruis-O, 3.10 gear and 29" tall tires.
According to the math, that's 20.8 mpg in U.S. terms. Very impressive, regardless, but especially for an old wagon!
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I got 25 miles per Imperial gallon in my 61 Meteor wagon. All original 332 - 2V, Cruis-O, 3.10 gear and 29" tall tires.
I hope that doesn't plummet with the 3-2V setup or something a hundred or more extra cubes will replace it.
I have a 3.3" crank in the shop. Now my bench building gears are turning.
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The stock Holley 2v is tiny and top speed is maybe 90 or so. Zero to 60 is minutes rather than seconds and it's kinda ugly so it has to have at least one virtue. One that I might have spoiled with two extra carbs... I will see soon enough. ::)
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4800lb empty 1965 F-250, 4:10 Dana, NP435, 352, Edelbrock SP2P-390 with D2TE heads got 13.3-5 mpg @ 80; 14.9-15.1 mpg @ 70; 16.3-7 mpg @ 60mph with a 68 Quadrajet. I put a 75 model with an aneroid assembly for the high evaluation trips. Now it get a steady 9.8-10.1 @ 80mph. Going back to the 4M till I find time to properly tune the M4MC.
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The stock Holley 2v is tiny and top speed is maybe 90 or so. Zero to 60 is minutes rather than seconds and it's kinda ugly so it has to have at least one virtue. One that I might have spoiled with two extra carbs... I will see soon enough. ::)
What size is your center Holley?