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#1 |
Active Member
Join Date: Mar 2005
Location: Stoughton, WI
Posts: 187
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'86 K10 Mpg
I'm curious to know what others with trucks similar to mine are seeing for MPG; mine's driven mostly on the highway but I haven't calculated the MPG lately. My setup:
'86 K10 Stock suspension & tires 2.73 gears 4-speed MT 305 Q-Jet, no air pump Single exhaust, no cat Initial timing 10 BTDC for 89 octane Thanks! Brad |
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#2 |
huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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My 86 K/10 long bed has a stock 305,stock suspension with 31" tires, 3:08 gears, 700R4 trans, dual 2 1/4 exhaust with stock manafolds, stock Q-jet, air pump,have no idea what timing is set at but uses 89 octane gas. I get about 6 MPG...
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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#3 |
Registered User
Join Date: Jun 2004
Location: El Lago, TX
Posts: 1,668
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76'
350 w/ 700r4 (not sure about gear ratio, but I think its too high for the 700r4) I was getting 12 M.P.G. I am getting 14 M.P.G. after installing a rebuilt Q-Jet and replacing the plugs and wires. I calculate the gas milage quite often when I fill it up, and it doesn't seem to matter how fast or slow i drive as it still averages out to around 14 miles per gallon. |
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#4 | |
Registered User
Join Date: May 2005
Location: Easthampton, MA
Posts: 74
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??
Quote:
Wow, that sucks... Do you have a longbed?
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Go Fast - Be Loud |
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#5 | |
huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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Quote:
Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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#6 | |
Registered User
Join Date: Dec 2004
Location: New Lenox, IL
Posts: 442
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Quote:
-Jeremy Last edited by jermasaurus; 05-28-2005 at 04:34 PM. |
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#7 |
Registered User
Join Date: Jan 2005
Location: beaumont,tx
Posts: 757
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i got a c-1500 350 700r holley 650 stock rear end not sure the ratio i get about 19mpg
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#8 | |
Born a Chevy Man
Join Date: Apr 2005
Location: Navarre, Florida
Posts: 10,221
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Quote:
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John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 *1986 Chevy SWB Silverado *1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) ![]() ![]() If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! ![]() GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS Last edited by 86swb; 05-27-2005 at 10:18 PM. |
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#9 | |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,400
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Quote:
BTW, for milage, you CANNOT beat a QJet. |
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#10 | |
Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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Quote:
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Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed |
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#11 |
needin' money
Join Date: May 2005
Location: Chickasha, Oklahoma
Posts: 1,106
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with my old 305 i got 8 mpg like i drive everyday, but one week i left my foot of the gas, and got 6, i am not lying i don't see how that happened it had a quadrajet new wires, cap, rotor, and plugs was timed at factory settings with a stock rearend i think it has 3.08 gears, and also a 350 tranny, i just put in a different motor so not for sure about the mileage on it though
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#12 |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,400
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my 77 K20 gets 12 mpg. tired old 350/TH350/NP203 fulltime 4x4. 4.10 gears, and 30" tires. it probably does better than that, but the only time i checked it was with the 7.5' Western blade hanging on the front.
with a little tuning and an adjusted driving style, i'd almost bet you guys with low numbers can easily double your milage. Last edited by 1FaastC10; 05-27-2005 at 10:36 PM. |
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#13 |
Born a Chevy Man
Join Date: Apr 2005
Location: Navarre, Florida
Posts: 10,221
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Thats not bad with 4x4 and low gears and the blade.
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John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 *1986 Chevy SWB Silverado *1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) ![]() ![]() If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! ![]() GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS |
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#14 |
Born a Chevy Man
Join Date: Apr 2005
Location: Navarre, Florida
Posts: 10,221
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OK, my mistake. Sorry. What year is your truck? But I do want to put a 700R4 in mine also.
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John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 *1986 Chevy SWB Silverado *1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) ![]() ![]() If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! ![]() GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS |
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#15 |
huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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Here's a shot of the old girl with her top on...
![]() Chuck
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90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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#16 |
Registered User
Join Date: Feb 2004
Location: St. Albert, Alberta, Canada
Posts: 89
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My "old" '85 Silverado with a 305, 700R4, and 3.42 gears was getting anywhere between 11 and 14MPG back when I was actively calculating gas mileage.
I recently upgraded to an '86 Sierra with a 350, TH400, and 3.73 gears. I haven't worked out the mileage yet. However, on the old '85 Silverado I was doing about 200 to 250 km per tank (down to 1/4 tank left), and now with the '86 I'm doing somewhere between 150 and 200km per tank (again to about 1/4 tank left). |
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#17 |
Registered User
Join Date: May 2005
Location: Easthampton, MA
Posts: 74
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Hmmmm....
Hey Chuck, I can't get over that 6MPG... It makes me reconsider buying a 73-87 when I can get this for a comparable price... These models get 5MPG, but the older deuces get 12-14.
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#18 | |
huh ???
Join Date: Nov 2002
Location: Fredericksburg,Va.
Posts: 3,369
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Quote:
Chuck
__________________
90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!" |
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#19 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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2wd TH700r 3.08 305 I get 8.5 mpg
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Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#20 |
Born a Chevy Man
Join Date: Apr 2005
Location: Navarre, Florida
Posts: 10,221
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What is the deal with our trucks and bad mpg? Years ago on a '72 Chevy 1/2 ton with a 350/350 Auto I was getting really bad mpg so I got me a Edelbroke intake and what they use to call the "fuel saver carbertor" and I got around 17mpg. A great improvement. But now they say they can not get that four barrel any more. It has been about 17 or more years ago when I got the "fuel saver" Go figure.
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John or 86 (Viet Nam combat Vet-BIG RED ONE) '65-'66 *1986 Chevy SWB Silverado *1984 Chevy Longbed Silverado New Kia Sportage (Wife's car and she loves it) ![]() ![]() If you can read this, YOU NEED TO THANK A TEACHER! If you can read this in ENGLISH, PLEASE THANK A SOLDIER! ![]() GOD BLESS AMERICA AND BLESS OUR FIGHTING TROOPS |
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#21 |
Tonawanda 454
Join Date: Mar 2004
Location: Liquid Sunshine State
Posts: 2,755
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with my 76 (LWB, 350, stock gearing) i went from 7mpg with crapped out Qjet to around 17mpg with Edelbrock 600cfm running slightly lean
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91 Chevy Suburban Tonawanda 454 R2500 - SOLD!!! ![]() 04 Dodge Durango 5.7L Hemi 2WD, 24K miles (as of July 2011) In the past 30 years about 90% of Fords are still on the road, the other 10% made it home. ------------------- |
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#22 |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,400
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wow... i got better milage than some of you guys with stock engines driving an 82 C10 with a VERY lumpy cam, and a 3000 stall converter. i was getting almost 10 out of that. you guys REALLY need to figure out that tuning for power isnt everything. you've got trucks, not racecars.
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#23 |
Registered User
Join Date: May 2004
Location: Lubbock, Texas
Posts: 2,121
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454/700R4 12ish in town, and around 17-18 on the highway. Oh, and my 454 makes 500 hp.
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'96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer |
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#24 |
Registered User
Join Date: Oct 2004
Location: Fort Collins, Colorado
Posts: 376
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'85 K20 tired350/th350, 4.10 gears
I am averaging 10.5 - 11mpg. I just rebuilt the stock Rochester Q-jet, but I am contemplating swapping this for the Edelbrock 1406.
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'99 K1500 Tahoe, 2dr, barn doors - 350/ 4L60E, 3.73 '01 K2500HD Silverado Ext Cab - 496/ Allison, 4.10 |
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#25 | |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,400
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