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View Poll Results: What is your average fuel mileage (US gallons) | |||
Less than 10MPG |
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7 | 13.73% |
10-12MPG |
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14 | 27.45% |
12-14MPG |
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8 | 15.69% |
14-16MPG |
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8 | 15.69% |
16-18MPG |
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9 | 17.65% |
18-20MPG |
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5 | 9.80% |
More than 20?! |
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1 | 1.96% |
Multiple Choice Poll. Voters: 51. You may not vote on this poll |
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#1 |
Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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I'm curious. What kind of fuel consumption are all you guys seeing in your 60-66? I think it'd be neat to have a poll. Post your numbers, along with a basic description of the truck and driveline. Should be interesting.
EDIT: Also, note how you calculated the mileage. Last edited by 66Submarine; 06-05-2013 at 09:14 PM. |
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#2 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: Fuel economy poll
get 15 city and 20 hwy, with my LSx motor and OD trans.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#3 |
Registered User
Join Date: Nov 2011
Location: fayetteville nc
Posts: 10,338
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Re: Fuel economy poll
I calculate my mileage off number of miles driven divided by gallons purchased. Factory unrebuilt 230, 3sp trans and 12 bolt rear end. 235/75R15 tires 12-14mpg. Motor is starting to get tired and Im guessing the rings are starting to wear some after 51 years, so I expect a few miles per gallon lower than most with the same drivetrain that has been rebuilt or replaced.
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1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer |
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#4 |
Registered User
Join Date: Nov 2009
Location: Galt, Calif
Posts: 2,437
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Re: Fuel economy poll
quad fed vortec 350/350.3.73 gears, 28 inch tall tires, 17 MPG..
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`64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip |
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#5 |
Registered User
Join Date: May 2005
Location: Beaverton, OR
Posts: 3,728
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Re: Fuel economy poll
I think my '66 got about 8, but it's been a while since I drove it.
![]() My '92 gets 17mpg city/hwy/on fire falling off a cliff.
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New Project: 1966 LWB C20 Plans: 1/2 ton conversion Dropmember front Dropmember rear Corvette discs Restored raised bed http://67-72chevytrucks.com/vboard/s....php?p=4295210 |
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#6 |
Registered User
Join Date: Apr 2004
Location: arkieland
Posts: 1,070
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Re: Fuel economy poll
64 SWB using 350/350, get 16mpg. I use the same station/pump, calculate gallons used and divide into mileage traveled. My old black truck was a stock 230/3 spd, also got 16mpg as long as I kept below 65mph or so.
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#7 |
Registered User
Join Date: May 2011
Location: Anderson SC
Posts: 3,886
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Re: Fuel economy poll
29.5 city/highway mix, never under 28.5 no matter how hard I drive my '64.... VW Bug.
![]() My '66 truck actually uses no gas at all- it is very green/environmentally friendly. 100% human power any time it moves. ![]()
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Project Goldilocks '66 C10 Short Fleet BBW Build '65 C10 Highly Detailed Stock Restoration Thread '78 Camaro Targa Roof Build '55 International Metal/Body/Paint Work '66 F100 Full Rotisserie Restoration '40 Packard 120 Convertible Coupe Restoration How To Restore and Detail an Original Gauge Cluster How To Detail Sand Body Panels, Edges, Corners, Etc |
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#8 |
Registered User
Join Date: Mar 2011
Location: Alameda, CA.
Posts: 173
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Re: Fuel economy poll
Pretty sure I'm hovering around 8ish gpm.... I had hoped for maybe 10...
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#9 |
Registered User
Join Date: Feb 2011
Location: Williams, CA
Posts: 760
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Re: Fuel economy poll
About 7mpg....found out my fuel pump is taking a dump--literally. Let ya know when it's running again.
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Jeff 96 C3500 Crew Cab Long bed (Waiting on Cool Name) 64 C-10 shortie stepside, "Ole Brownie" C-10 Club My achingly slow build: http://67-72chevytrucks.com/vboard/s...d.php?t=508345 |
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#10 |
Registered User
Join Date: Sep 2009
Location: Monroe,Iowa
Posts: 4,370
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Re: Fuel economy poll
If it was my DD I'd worry about mpg. But I worry more about SMILES PER MILE!!!!
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#11 |
Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: Fuel economy poll
Interesting results so far, everyone.
Mine IS my daily driver, I want it all! ![]() ![]() |
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#12 |
Senior Enthusiast
Join Date: Feb 2007
Location: Spokane Valley, WA
Posts: 8,356
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Re: Fuel economy poll
Last time I checked many years ago I was getting around 15-17. With a brand new engine and a cam I have no idea what it gets now. I suppose I don't really care that much anymore as I'm retired and the truck is just for fun.
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My Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=444502 |
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#13 |
Registered User
Join Date: Feb 2007
Location: Phoenix Az
Posts: 432
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Re: Fuel economy poll
10-11 mpg from Florida to Az hauling all of this stuff . 350 sbc automatic transmission. Calculated by hand.
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Rockin' a '66 and loving every minute of it ![]() |
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#14 |
Registered User
Join Date: Aug 2012
Location: Rathdrum ID
Posts: 1,128
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Re: Fuel economy poll
I'm getting around 7 mpg.
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66 shorty ![]() |
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#15 |
Registered User
Join Date: Feb 2010
Location: Los Banos, CA
Posts: 390
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Re: Fuel economy poll
leaky quadrajet on vortec headed 350, 350 TH and 3.73 posi with 255 60 15s (27 inch tires) getting 9 on freeway going 70...
recently put a good performer carb (edelbrok) 500cfm, will calculate new mileage and am running ported manifold vacuum to advance on the distributor and normal (unported) manifold vacuum to the transmission. |
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#16 |
Account Suspended
![]() Join Date: Oct 2012
Location: here
Posts: 2,408
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Re: Fuel economy poll
pullin 15 to 16 combined city/highway with a rebuild 230 I6 in a 65 C10. Using HEI and a Weber DGEV carb. Still tuneing and mileage increasing with each tweak to jetting. Hopeing for 18 to 19 when all finished but that might be optimistic with a factory 3 speed and 3.73 rear.
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#18 |
Registered User
Join Date: Dec 2004
Location: West Sacramento, CA
Posts: 368
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Re: Fuel economy poll
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#19 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,543
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Re: Fuel economy poll
Back in the late 80's I had a 72 GMC C20 with 1 ton rolling chassis, it had a 400/400 and got 10MPG fully loaded or empty. I even had it pulling a goose neck 2-car hauler and it got 10MPG period.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#20 |
Senior Member
![]() Join Date: Aug 2008
Location: Long Beach, CA
Posts: 1,813
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Re: Fuel economy poll
1964 C10 SWB, 350 (mild cam, quadrajet, manifolds-dual exhaust), TH400 (shift kit), 3.73:1 12-bolt, 31x10.5R15 = 13mpg (averaged total miles per fill-up over hundreds of trips mixed driving)
1964 C10 SWB, 402 (stock), TH400 (shift kit), 3.73:1 12-bolt, 31x10.5R15 = 11mpg (averaged total miles per fill-up over dozens of trips mixed driving) 1966 K20 SWB, 402 (stock), SM465, NP205, 4.11:1 14BFF+D44, 35x12.5R16 = 12mpg (hoping, wishing, dreaming!)
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Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble! |
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#21 |
Registered User
Join Date: Jan 2011
Location: Yakima Washington
Posts: 3
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Re: Fuel economy poll
My truck is a '65 GMC 1500, 305 V6 with HEI, Holley 500 2BBL, single 2 1/2" exhaust with Magnaflow muffler, SM420 and 4.10 axle. I have spent a lot of time tweaking the carb and ignition advance curve.
The best I have done is 16 MPG empty at 60 MPH. I have never checked the "around town" mileage. I usually haul a 8 1/2' camper, and weigh 7100 on the scale. I can get up to 11 MPG with camper if I keep it at 50 MPH or less on the mountain roads, but if I need to do 60 - 65 because of traffic, it drops to 8.5 to 9 MPG. |
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#22 |
Registered User
Join Date: Oct 2012
Location: cortland, oh
Posts: 792
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Re: Fuel economy poll
On the way home from fresno to near youngstown, Ohio, 66 LWB 327, factory everything, 3.73, 80K original miles, doing 70MPH by gps all the way (75MPH according to speedo) we got 12-13MPG steady. However, with that 4BBL and tiny primaries, i bet just staying around/under 55mph for a day would get you massive savings, like 15MPG. We were into the 4 barrels pretty much the whole time i think. Also, we were leaking fuel and sucking air into one of the fuel pump lines some, so maybe that cost us a single mpg or something.
I'm hoping with the engine rebuild (stock so low rpm torque band), and OD to bring the RPMS down, and new carb rebuild, fuel pump, etc. that i can squeeze pit 15-18 steady if i drive casually. My '07 1500 6.0L 1/2 ton 2wd crew cab gets 15 no matter what, and that's with it turning half the cylinders off on light cruising and coasting!
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Project "i'm just going to clean up the interior and the engine bay": http://67-72chevytrucks.com/vboard/s...d.php?t=550931 |
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#23 |
Post Whore
![]() Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
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Re: Fuel economy poll
Think mine gets around 15 or maybe got around 15.... 49 years ago! With 150,000 miles on it now it no doubt gets a little worse mileage than before.
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1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
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