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02-27-2011, 04:30 PM
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#1 |
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Registered User
Join Date: Oct 2010
Location: Wallingford CT
Posts: 260
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Mpg ?
Does anyone know the mpg on a 1971 C20 LWB 396cu in automatic tranny. I am trying to figure the fuel cost on a long highway trip home if I buy it!
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02-27-2011, 04:34 PM
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#2 |
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The Niner
 
Join Date: Nov 2010
Location: Broad Brook, CT
Posts: 2,499
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Re: Mpg ?
Hey fellow Nutmegger!
Where's the truck at? I think you'll typically expect 10-12, depending on your rear gears. Sounds like you've probably got 4:11's.
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"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
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02-27-2011, 04:39 PM
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#3 |
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Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,395
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Re: Mpg ?
I bet closer to 8 mpg
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67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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02-27-2011, 04:41 PM
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#4 |
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Roadtrip!
 
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,787
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Re: Mpg ?
If original i think it will have 3:54 gears and may get upwards of 12 on the hiway...
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67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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02-27-2011, 04:44 PM
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#5 |
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Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,395
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Re: Mpg ?
Wow Eric, I better tell that too my buddy who has a 71 402 1/2 ton, all he gets is 8, no mater how he drives it. I think all my 72 swb 350 4x4 get is 10 mpg if I'm lucky
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67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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02-27-2011, 04:58 PM
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#6 |
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Registered User
Join Date: Oct 2010
Location: Wallingford CT
Posts: 260
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Re: Mpg ?
Thanks for the help it is kind of what I figured but maybe I was hoping in "That" year those trucks got 18 mpg that way I could help convince myself to just buy it!!!!!!
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02-27-2011, 07:54 PM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Mpg ?
10 to 12 is a good number to assume on all the 2 wheel drive trucks. Assuming they are running on all 8 that is.
Anything better is awesome, and anything less means you should figure out whats wrong (assuming a stock motor) |
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02-27-2011, 08:39 PM
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#8 | |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Mpg ?
Quote:
DON'T let that keep you from buying a truck, you will find a way to finance the cost of the fuel, when you need it. We always do.
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Frank |
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02-28-2011, 02:15 AM
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#9 |
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Senior Member
Join Date: Nov 2004
Location: Vacaville, CA
Posts: 2,272
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Re: Mpg ?
I was getting 10 with my crew cab with the 454 and overdrive.
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02-28-2011, 10:55 AM
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#10 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: Mpg ?
I had a '72 C-20 with a 350, 4 speed, 4.11 rear and stock tires and all it normally got was 10 mpg. That was way back when gasoline prices were low.
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'67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E. |
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02-28-2011, 10:56 AM
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#11 |
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S.D.M.F.
Join Date: Jan 2007
Location: Westport, In
Posts: 639
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Re: Mpg ?
i get less than 10
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1969 Chevy Longhorn 396/400 3/4 ton.  1991 Chevy Camaro RS 305/700r4 1978 Honda XL175 and XL350(the evil twin)  2006 Kawasaki ZX-14r drag bike-best e.t. 9.4@145 mph without nitrous 1971 BSA Thunderbolt 650cc
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02-28-2011, 01:12 PM
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#12 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Mpg ?
just figure you need to stop every 150-175miles and put in $70-$80 gas each time
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 02-28-2011 at 01:19 PM. |
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02-28-2011, 01:19 PM
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#13 |
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Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Mpg ?
It'll be better after you get it home and don't have to drive it, except when you want to...Maybe the seller will front you a tank (or 2) of gas money. Oh, let him call it a rebate....He's gonna want to sell it to keep from having to put gas in it, so it's a win-win deal.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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02-28-2011, 02:57 PM
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#14 |
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Registered User
Join Date: Sep 2010
Location: Casselton, North Dakota 58012
Posts: 1,082
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Re: Mpg ?
I drove my 69 c10 170 miles and got 17 to the gallon! I drove 63 mph most of the way. I have a 307 with 3:08's. I felt pretty proud!
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02-28-2011, 03:17 PM
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#15 |
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Local Redneck Authority
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 584
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Re: Mpg ?
I'm planning on flying to southern cali and hoping to buy/drive back a 67-72 (not picky on anything but a good runner and fairly solid cab) and am going to budget for around 8. I guess anything more than that and I'll be able to get a better meal at the end of the days of driving...
 so somewhere around $1100 for fuel one way.... I guess I'll make sure those tires are well inflated before I leave!
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-Kevin four on the floor feel the beat in your soul movin to the rhythym pumpin til ya cant take no more dance if you want to do what you came to you cant ignore the feeling of that four on the floor |
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02-28-2011, 03:20 PM
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#16 |
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Registered User
Join Date: Jan 2001
Location: Sabinal, Texas
Posts: 1,706
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Re: Mpg ?
I get 9-10 with my 402/4spd.
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