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View Poll Results: Dis-Placed-Ment------what do you drive? | |||
| 6 |
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3 | 4.00% |
350 |
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50 | 66.67% |
383 |
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2 | 2.67% |
454 |
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10 | 13.33% |
other (please list) |
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11 | 14.67% |
Multiple Choice Poll. Voters: 75. You may not vote on this poll |
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Thread Tools | Display Modes |
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#26 |
Registered User
Join Date: Jun 2007
Location: Cape Coral, Florida
Posts: 1,123
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Re: yet another MPG thread
86 swb, 305/700r4 2.73 rear, P275/60R15 all the way around and I get 17mpg mix of city/highway. I've gotten as high as 18.7mpg and as low as 8mpg, but 17.xx is average.
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#27 |
Registered User
Join Date: Jan 2009
Location: Kansas city
Posts: 756
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Re: yet another MPG thread
Im guessing about 12mpg on a good day with my 355.
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***My 84 short bed build up***** http://67-72chevytrucks.com/vboard/s...68#post3481968 |
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#28 |
Registered User
Join Date: Jun 2010
Location: niagara, ontario
Posts: 109
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Re: yet another MPG thread
I get about 11 MPG average. 13 if im towing, Strange eh ? thats a 2005 4.6 ford F150
my old 86 C10 350/350/4.11 gears got 19 my 89 camaro 305 got 27mpg all day long but failed an e-test interesting huh
__________________
1991 V3500 350TBI/4l80/205 D60/14bff - Crew long 1987 IrocZ-28 525 horse/567 Lb Tq 383 1976 K30 on 39.5s One wheel drive thanks to a np203 ![]() and some K5's lol |
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#29 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: yet another MPG thread
Mine is getting close to 18 when I do drive it to work. the SEFI and overdrive do wonders. It has pretty decent power, too.
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1974 Jimmy- 5.3/4L80e/NP241 |
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#30 |
Living la vida broka
![]() Join Date: Jan 2003
Location: P'ville California
Posts: 221
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Re: yet another MPG thread
1984 longbed 6.2l/700r4 23mpg hwy
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1976 C10 Longbed lowered 5/7, hot 355/TH350. ~ SOLD 1974 C10 Shortbed Stepside 350/Saginaw ~ SOLD 1984 C10 Longbed 6.2l diesel 700r4. ~SOLD 1985 GMC C20 350 700r4, ~under the knife |
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#31 |
Registered User
Join Date: Jan 2010
Location: Milwaukee, WI
Posts: 122
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Re: yet another MPG thread
either zero or infinite. she doesnt run, turn over, cough, nothing.
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#32 |
Addicted to Rust
![]() Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Re: yet another MPG thread
454 tbi 400 3.08 gears 6mpg in town 11-12 highway.
The 308s make it lug itself right out of the power band in town. thats why a 5.3/4l60e and some 3.42s are laying in the shop floor. Mines a DD, and I care about mpg. Jay
__________________
Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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#33 |
Squarebody Aficionado
Join Date: May 2008
Location: Miami, FL
Posts: 713
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Re: yet another MPG thread
well my mileage isnt good at all. I dont sell crack but I wouldnt stop driving my truck if it only got .5 mpg, then again I only drive my truck for fun. I think calculating mpg on these trucks can never give you a consistent result. if your going against the wind you can cut the mileage in half.
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#34 |
Registered User
Join Date: May 2010
Location: Reno Ne-VAH-da
Posts: 594
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Re: yet another MPG thread
I read the Quadrajet carb is more efficient than a 2 barrel. I got a 305, 4 speed 4x4 and the quadrajet, what could i expect as mileage?
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#35 |
Registered User
Join Date: Mar 2007
Location: st louis,mo
Posts: 313
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Re: yet another MPG thread
I get a 1000 smiles a gallon
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'79' shortbed |
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#36 |
Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,188
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Re: yet another MPG thread
83 C20 stock Mr. Goodwrench 454 (slightly bored over) rebuild with 4 spd granny and 4:10 and gear vendor: 11 city, 13+ highway (but can go down to 9 city when using it as a dump truck or idling a lot.)
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#37 | |
haha, ford guys...
Join Date: Feb 2007
Location: Visalia, CA
Posts: 576
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Re: yet another MPG thread
Quote:
Giving your 305 is tuned alll the way areoung, id guess 14mpg give or take KEEP EM COMMING!! |
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#38 |
Registered User
Join Date: May 2007
Location: East Haven, CT
Posts: 882
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Re: yet another MPG thread
87 2wd swb, 305 TBI/700r4, 3.08 gears. 14 Mix. I would like to bring that up a tad. I drive it pretty easy. The transmission needs a rebuild, it slips a bit between gears so that probably doesn't help. The 305 is in good tune but definitely has some miles racked up. My s10 blazer 4x4 with the 4.3 tbi gets 17 mix, but is way underpowered compared to the 305 in my truck.
Future plans: rebuild 700r4, swap in an L31 350 Vortec while still using the TBI injection.
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87 Chevy 2wd SWB: 305/700r4 Dual Exhaust, K&N Filter, Injector Pod Spacer, TBI Spacer, Belltech Front Sway Bar, Corvette Servo, Western Chassis 4/6 and c-notch |
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#39 |
Registered User
Join Date: Dec 2009
Location: lindale,tx
Posts: 2,373
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Re: yet another MPG thread
7-8 mpg. 350/700r4/4:10 gears/ NP208/85 burb. Thats in town mixed punching on it and fuel sipping. 6.0L sitting on stand waiting for rest of parts. Will be carbed but hope to get same mpg with WAY more power. That will deff make the smiles per gallon go up.
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__________________
82 c10 5.3/4l60 84 c20 5.3/sm465 85 chevy k10 suburban LQ4/4l60 91 chevy c10 suburban Lsa 5.3/4l60 2017 Silverado whipple 5.3 1964 Vw beetle 1974 vw beetle |
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#40 |
Account Suspended
Join Date: Dec 2007
Location: Unnapreciative, Trollville
Posts: 2,079
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Re: yet another MPG thread
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#41 |
Registered User
Join Date: Jul 2010
Location: lawton ok
Posts: 190
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Re: yet another MPG thread
just bought an 88 1 ton crew cab 4x4 with a 6.2 diesel auto no overdrive . any idea what kinda mpg im gonna get once its on the road ?
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#42 |
Registered User
Join Date: Dec 2009
Location: Milton, FL
Posts: 733
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Re: yet another MPG thread
350 built a little with long tubes, TH350, 3.42's out back on 235/75's 10-13mpg
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#43 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: yet another MPG thread
340 hp 350, 5.13 gears, SM465, 32" tires, 5200 pound 3/4-ton 4x4 = 7 mpg city, 9 mpg highway.
Nothing like 4000 rpm on the freeway to suck down the fuel.
__________________
miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#44 |
Registered User
Join Date: Aug 2009
Location: hillborough nc
Posts: 410
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Re: yet another MPG thread
amen... i love to drive my truck and at one time it got good milage! when it was stock!!! for real when my 77 big ten was just single exhaust and all that i had no urge to kick in the 4bbl and i could go a month on 40 bucks of gas. i bet if i kept it at 55 back then i was geting 14 or so to the gallon. but when skool started back i wanted a good sounding truck. so i asked mom if i could get duel exhaust for my truck to "help my milage" (dont we all tell this to our parents just to get more power?) well i dumped like $350 between duel exhaust through summit turbo mufflers, k&n air filter, and a flex fan. it probly helped a little but not much, it did more hurt than help i think couse every where i go now i make them pipes do some talking and i probly get like 8 or less becouse of jack rabbit starts and all that. but if i changed my driving habits id be getting "good milage"... for these trucks
but if my 350 ever blows i want to drop in a 250 stright six and a t5 and make it a nice high way cruzer
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77 chevy BIG 10 350/sm465/12bolt w 3.73 bout 240 horse power NO power steerin 79 chevy 1/2 ton 250/three on the tree/3.08s soon to get built 250/floor shift conversion/3.08s 81 mercedes 300d 25 MPG 77 chevy BIG DOOLEY 454/sm-465/14 bolt 4.10s "fully loaded" 73 plymouth duster 225 slant six/230 3 speed/8 1/4 trying to acheve 300 horse six http://www.cardomain.com/ride/3135091 '77 chevy trucks. built to stay tough. life is short build a hot rod ![]() Last edited by big10ratrod77; 07-15-2010 at 09:48 AM. Reason: i messed up |
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#45 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: yet another MPG thread
18-19 in town, 20-21 on the highway. 5.3, 4L60E, 3.42.
Once I have a new truck bought, then the 5.3 will get built up, or replaced with a 6.0 and built up. By then, I won't get two poops what it gets for mileage.
__________________
Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#46 | |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: yet another MPG thread
Quote:
__________________
Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE Last edited by glock35ipsc; 07-15-2010 at 10:35 AM. |
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#47 |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,193
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Re: yet another MPG thread
4.3L V6, MY6 OD trans, 3.73 rear axle, P235/75R15 tires = around 20 mpg.
K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#48 |
Kid's Mechanic
Join Date: Nov 2006
Location: Kansas City
Posts: 8,241
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Re: yet another MPG thread
Umm , I have a one ton....All you need to know is,It has 2 20 gallon tanks........Nuff said.
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#49 |
#16876
Join Date: Apr 2005
Location: Auburn WA
Posts: 12,266
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Re: yet another MPG thread
I get 8 mpg's out of my 402. It costs me $18.00 each time I drive it to work & back. Just did it today for the second time this month. In no way could I afford to do it all of the time. I sure enjoy it when I can. It's worth every penny.
__________________
Posted via Stationary Device '71 Custom Deluxe C-20 402. '67 Buick Special 455. '49 Plymouth Special Deluxe. "I love that old car smell" ![]() Some people are like Slinkies... not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs. |
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#50 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: yet another MPG thread
last i checked was around 10ish, 85 4x4 lwb 355, aftermarket cast heads, mild cam, 700r4, 4inch lift and 33's
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
Last edited by Hubscrub; 07-15-2010 at 10:51 PM. |
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