fuel mileage k5 blazer guys? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Matt Man · 07-01-2010, 02:34 PM

What kind of fuel mileage are yall getting on your blazers? im thinking about picking up a 90 so it has fuel injection. Just was wondering if its going to be much better than my crew cab.

justpball · 07-01-2010, 05:16 PM

i dont know about the blazers but I get around 14-16

Matt Man · 07-01-2010, 11:34 PM

Quote:

Originally Posted by justpball

i dont know about the blazers but I get around 14-16

in your 2wd burb im guessing?

justpball · 07-02-2010, 09:00 AM

both get around the same believe it or not...LOL, the 4x4 has 3.42 gears so it gets the same

tswore · 07-02-2010, 10:28 AM

Quote:

Originally Posted by justpball

i dont know about the blazers but I get around 14-16

Same here, stock height 4x4 with 33/12.50 tires.

grayw0lf · 07-05-2010, 01:19 PM

I get around 17mpg w/ 4x4, 3.08's & the 6.2L diesel. Th400, no overdrive.

Mr Pops · 09-16-2010, 02:38 AM

My 76 2wd Blazer has a 4:10 rearend and a 700R4 Trans. I can get 700 kms to 100 liters of gas. My father in law gave me this conversion formula for metric to standard; Kilometers divided by liters, multiplied by 2.825. If this is an accurate formula, my blazer gets 19.78 MPG! (highway)

BigBlocksRule · 09-16-2010, 07:20 AM

Mr. Pops, you really need to refigure and use the return uphill trip as part of your calculations

Almost 20 mpg from one of these heavy rigs is unheard of with a 700R4 and stock gears, let alone the 4.10 cogs you're running.

sandnuriz · 09-16-2010, 10:51 AM

Well I didn't buy mine for fuel mileage but in town it get around 9 and on the hwy 16 sometime even better if i keep my foot out of it

skidder111 · 09-16-2010, 11:02 AM

Mr. Pops - You are getting 19.78 miles per Imperial gallon.
One US gallon = 0.83 Imperial gallons.
19.78 x 0.83 = 16.4 miles per US gal.
Class dismissed.

sandnuriz · 09-16-2010, 11:09 AM

^ouch^ what he said

Mr Pops · 09-16-2010, 02:19 PM

Quote:

Originally Posted by skidder111

Mr. Pops - You are getting 19.78 miles per Imperial gallon.
One US gallon = 0.83 Imperial gallons.
19.78 x 0.83 = 16.4 miles per US gal.
Class dismissed.

Hmm, I thought that formula was too good to be true.. haha thanks. Still not bad I guess for a 4200 pound vehicle. (weight according to the highway truck scales)

Jonboy · 09-16-2010, 09:35 PM

Quote:

Originally Posted by Mr Pops

My 76 2wd Blazer has a 4:10 rearend and a 700R4 Trans. I can get 700 kms to 100 liters of gas. My father in law gave me this conversion formula for metric to standard; Kilometers divided by liters, multiplied by 2.825. If this is an accurate formula, my blazer gets 19.78 MPG! (highway)

I thought the McKenzie brothers said to double it and add 30 to go metric. A six pack doubled was 12 beers, and add 30 was 42 metric beers.

Matt Man · 09-17-2010, 12:03 AM

Quote:

Originally Posted by Mr Pops

Hmm, I thought that formula was too good to be true.. haha thanks. Still not bad I guess for a 4200 pound vehicle. (weight according to the highway truck scales)

4200? i wonder how heavy my truck is lol i know there heavy...

mongoose · 09-17-2010, 12:54 AM

Quote:

Originally Posted by Jonboy

I thought the McKenzie brothers said to double it and add 30 to go metric. A six pack doubled was 12 beers, and add 30 was 42 metric beers.

nah... that would be us beers.... not metric..

6 pack = 44 american beers.

that's how you go from C to F roughly.... f= c2+32

junkyardjohn · 09-17-2010, 05:40 PM

MY 84 CUCV BLAZER WEIGHS 5200 POUNDS CURB WEIGHT. IT HAS 39" TIRES,308 GEARS,A 6.2 DIESEL RUNNING THRU A T-400 & GETS 18 MILES PER U.S. GALLON NO MATTER IF ON THE HIWAY EMPTY OR IN TOWN & LOADED. I'VE BEEN DRIVING THESE OLD TRUCKS FOREVER, & CAN'T BELIEVE THE MILLIAGE THIS DIESEL GETS. YES I TRIPPLE CHECKED MY MATH & ALTHOUGH IT WAS A LONG TIME AGO.... I WENT TO COLLEDGE. I USED TO HATE THE SMELL OF DIESEL FUEL. ANYMORE..... NOT SO MUCH.

JOHN

Mr Pops · 09-17-2010, 08:57 PM

Quote:

Originally Posted by Matt Man

4200? i wonder how heavy my truck is lol i know there heavy...

Well my 1ton crewcab 4x4 weighs 6000lbs (according to the truck scales) so I guess you'd have to subtract a transfer case and a front axle and add the weight of a front crossmember..haha ..oh, and minus the dually fenders.. I'd be curious to know what the difference is.

SBTork · 09-18-2010, 09:06 AM

My C10 Suburban gets almost the exact same as justpball, 14-16. BUT, that's a 350/700R4 2wd 'Burb.

BlueMagicSS · 09-18-2010, 10:44 PM

I get around 12mpg give or take a gallon. 89 K5, with 3.73's and a 700r4

Comerz · 04-11-2013, 10:17 AM

Hey guys. I got a 1985 k5 blazer. Wondering if yall have any estimates on mpg. I threw a 350ci (5.7 liter)4 bolt main in mine, edelbrock intake, holley denominator carburetor. Has 3 speed automatic tranzy. have 3.73 gears in the rear end. and estimates? got a lift kit on it too, its a 4-5 inch lift. May try to get a 383 (6 liter) out of a newer suburban/ tahoe w/ 6 speed transmission once i start doing the frame off restoration. Thanks!!!!

68Timber · 04-11-2013, 11:50 AM

That sounds like a 10 to 11 mpg truck. If you want better mileage, look at a 5.3 instead of a 6.0 and get the overdrive tranny with it.

BaggedRanger · 04-11-2013, 12:11 PM

My average is 9-10 mpg and the best that I've ever gotten was 13mpg on the freeway.. Haven't figured out what gears I'm running but getting ready to swap rears anyway as we start bagging the rear.. Hopefully with the lower gears in the new rear I'll get a little better mileage.

**special-K** · 04-12-2013, 08:39 AM

I don't have a K/5 Blazer,but I have a K/5 Jimmy

. I get 22mpg with 6.2,700r4,4.10,35" tires. Classic big 4wd that gets modern day economy. I love it!

Comerz · 04-12-2013, 10:17 AM

Well I want the 6.0 for the torque. I'm not sure just yet though. Just would be nice to have all that giddy up and go in it. And believe it or not, my 3 speed that i got in it has O.D. And ya right now i get about 8 mpg. thanks for the replies guys.

gloriavoxdei · 04-12-2013, 02:31 PM

My '78 Jimmy with 400, th350, np203 and 4.10 gears on 265/75-16's get in the neighborhood of 12 mpg. I try not to calculate it too often as it causes days of depression any time I do. I prefer to check it in smiles per gallon

which is much higher

07-01-2010, 02:34 PM	#1
Matt Man Registered User Join Date: Oct 2009 Location: Buhl, Idaho Posts: 1,438	fuel mileage k5 blazer guys? What kind of fuel mileage are yall getting on your blazers? im thinking about picking up a 90 so it has fuel injection. Just was wondering if its going to be much better than my crew cab. __________________ 86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11 1981 chevy K10 short Bed Scottsdale SOLD 10-26-2020 67 GMC Stepside Straight six/3 on the tree "The Peach" 2020 Silverado Double Cab LT Z71 5.3 8 speed Daily Driver K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934 The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903

07-01-2010, 05:16 PM	#2
justpball Registered User Join Date: Dec 2008 Location: Silverhill, Al Posts: 2,026	Re: fuel mileage k5 blazer guys? i dont know about the blazers but I get around 14-16 __________________ Fuzzy Dice Club Member 87 Crew SWB Build for the crew http://67-72chevytrucks.com/vboard/s...d.php?t=430082 http://www.cardomain.com/ride/3232925 90 burb 2wd Build Thread For The Burb! http://67-72chevytrucks.com/vboard/s...d.php?t=383055

07-02-2010, 09:00 AM	#4
justpball Registered User Join Date: Dec 2008 Location: Silverhill, Al Posts: 2,026	Re: fuel mileage k5 blazer guys? both get around the same believe it or not...LOL, the 4x4 has 3.42 gears so it gets the same __________________ Fuzzy Dice Club Member 87 Crew SWB Build for the crew http://67-72chevytrucks.com/vboard/s...d.php?t=430082 http://www.cardomain.com/ride/3232925 90 burb 2wd Build Thread For The Burb! http://67-72chevytrucks.com/vboard/s...d.php?t=383055

07-05-2010, 01:19 PM	#6
grayw0lf Registered User Join Date: Apr 2004 Location: Clanton, AL Posts: 1,253	Re: fuel mileage k5 blazer guys? I get around 17mpg w/ 4x4, 3.08's & the 6.2L diesel. Th400, no overdrive. __________________ 85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days! 05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal!

09-16-2010, 02:38 AM	#7
Mr Pops Ridin' Dirty Join Date: Oct 2009 Location: Ardrossan Alberta Canada Posts: 2,193	Re: fuel mileage k5 blazer guys? My 76 2wd Blazer has a 4:10 rearend and a 700R4 Trans. I can get 700 kms to 100 liters of gas. My father in law gave me this conversion formula for metric to standard; Kilometers divided by liters, multiplied by 2.825. If this is an accurate formula, my blazer gets 19.78 MPG! (highway) __________________ 1978 C3500 Crewcab (Project) 1979 C2500 Crewcab (Driver/project) 1988 R2500 Crewcab (Driver) 1988 V3500 Crewcab 1988 R2500 Crewcab (Mint, Ex Fire Dept) 1968 Chev Suburban (4x4 conversion) LINK 1970 Chev C20 Suburban (driver/cruiser)LINK 2005 Impala (Incognito vehicle) 2004 Yukon XL Denali (Kid hauler) 1947 Case tractor Facebook Page(1000's of pictures of GM cars and trucks organized into albums) YouTube Channel

09-16-2010, 07:20 AM	#8
BigBlocksRule Registered User Join Date: Jun 2008 Location: Lubbock, TX Posts: 2,047	Re: fuel mileage k5 blazer guys? Mr. Pops, you really need to refigure and use the return uphill trip as part of your calculations Almost 20 mpg from one of these heavy rigs is unheard of with a 700R4 and stock gears, let alone the 4.10 cogs you're running.

09-16-2010, 10:51 AM	#9
sandnuriz Registered User Join Date: Sep 2010 Location: Bakersfield,Ca. Posts: 340	Re: fuel mileage k5 blazer guys? Well I didn't buy mine for fuel mileage but in town it get around 9 and on the hwy 16 sometime even better if i keep my foot out of it __________________ 57 Chevy shortbed,327,Muncie 4 speed,12 Bolt rear end(current project) It's your ride build it the way you want !!!!!!!!!!

09-16-2010, 11:02 AM	#10
skidder111 Registered User Join Date: Jan 2008 Location: Pincher Creek, Alberta, Canada Posts: 140	Re: fuel mileage k5 blazer guys? Mr. Pops - You are getting 19.78 miles per Imperial gallon. One US gallon = 0.83 Imperial gallons. 19.78 x 0.83 = 16.4 miles per US gal. Class dismissed.

09-16-2010, 11:09 AM	#11
sandnuriz Registered User Join Date: Sep 2010 Location: Bakersfield,Ca. Posts: 340	Re: fuel mileage k5 blazer guys? ^ouch^ what he said __________________ 57 Chevy shortbed,327,Muncie 4 speed,12 Bolt rear end(current project) It's your ride build it the way you want !!!!!!!!!!

09-17-2010, 05:40 PM	#16
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,427	Re: fuel mileage k5 blazer guys? MY 84 CUCV BLAZER WEIGHS 5200 POUNDS CURB WEIGHT. IT HAS 39" TIRES,308 GEARS,A 6.2 DIESEL RUNNING THRU A T-400 & GETS 18 MILES PER U.S. GALLON NO MATTER IF ON THE HIWAY EMPTY OR IN TOWN & LOADED. I'VE BEEN DRIVING THESE OLD TRUCKS FOREVER, & CAN'T BELIEVE THE MILLIAGE THIS DIESEL GETS. YES I TRIPPLE CHECKED MY MATH & ALTHOUGH IT WAS A LONG TIME AGO.... I WENT TO COLLEDGE. I USED TO HATE THE SMELL OF DIESEL FUEL. ANYMORE..... NOT SO MUCH. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST Last edited by junkyardjohn; 09-17-2010 at 05:42 PM.

09-18-2010, 09:06 AM	#18
SBTork Garage wrench Join Date: Feb 2008 Location: LaCrosse, WI Posts: 1,856	Re: fuel mileage k5 blazer guys? My C10 Suburban gets almost the exact same as justpball, 14-16. BUT, that's a 350/700R4 2wd 'Burb. __________________ -Adam 90 V1500 GMC Suburban 350/700R4/NP241..... 01 Saturn SL1 stock DD.....

09-18-2010, 10:44 PM	#19
BlueMagicSS Registered User Join Date: Jun 2010 Location: Bay Area, CA Posts: 40	Re: fuel mileage k5 blazer guys? I get around 12mpg give or take a gallon. 89 K5, with 3.73's and a 700r4

04-11-2013, 10:17 AM	#20
Comerz Registered User Join Date: Mar 2013 Location: Fayettville Ar Posts: 19	Re: fuel mileage k5 blazer guys? Hey guys. I got a 1985 k5 blazer. Wondering if yall have any estimates on mpg. I threw a 350ci (5.7 liter)4 bolt main in mine, edelbrock intake, holley denominator carburetor. Has 3 speed automatic tranzy. have 3.73 gears in the rear end. and estimates? got a lift kit on it too, its a 4-5 inch lift. May try to get a 383 (6 liter) out of a newer suburban/ tahoe w/ 6 speed transmission once i start doing the frame off restoration. Thanks!!!!

04-11-2013, 11:50 AM	#21
68Timber I know the pieces fit Join Date: Nov 2007 Location: MONTGOMERY, AL Posts: 5,523	Re: fuel mileage k5 blazer guys? That sounds like a 10 to 11 mpg truck. If you want better mileage, look at a 5.3 instead of a 6.0 and get the overdrive tranny with it. __________________ John 79 2wd Blazer (Bruiser) 85 M1009 Blazer (Sarge) build 74 Honda Z50 build

04-11-2013, 12:11 PM	#22
BaggedRanger Registered User Join Date: Feb 2012 Location: Sandy Eggo, CA Posts: 183	Re: fuel mileage k5 blazer guys? My average is 9-10 mpg and the best that I've ever gotten was 13mpg on the freeway.. Haven't figured out what gears I'm running but getting ready to swap rears anyway as we start bagging the rear.. Hopefully with the lower gears in the new rear I'll get a little better mileage.



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04-12-2013, 08:39 AM	#23
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: fuel mileage k5 blazer guys? I don't have a K/5 Blazer,but I have a K/5 Jimmy . I get 22mpg with 6.2,700r4,4.10,35" tires. Classic big 4wd that gets modern day economy. I love it! __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

04-12-2013, 10:17 AM	#24
Comerz Registered User Join Date: Mar 2013 Location: Fayettville Ar Posts: 19	Re: fuel mileage k5 blazer guys? Well I want the 6.0 for the torque. I'm not sure just yet though. Just would be nice to have all that giddy up and go in it. And believe it or not, my 3 speed that i got in it has O.D. And ya right now i get about 8 mpg. thanks for the replies guys.

04-12-2013, 02:31 PM	#25
gloriavoxdei Registered User Join Date: May 2010 Location: Florissant, CO Posts: 97	Re: fuel mileage k5 blazer guys? My '78 Jimmy with 400, th350, np203 and 4.10 gears on 265/75-16's get in the neighborhood of 12 mpg. I try not to calculate it too often as it causes days of depression any time I do. I prefer to check it in smiles per gallon which is much higher __________________ 1978 GMC Jimmy, 400, th350, np203 with part time conversion, Fibrecraft popup camper, soon to get a 14 bolt/d44 swap 2001 Yukon XL2500, 6.0, 4L85E, 4x4, family truckster

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