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04-13-2013, 09:44 AM
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#26 |
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Registered User
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
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Re: fuel mileage k5 blazer guys?
My suburban is getting 6-8....really good day 10. Weighs 5600lbs
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04-13-2013, 09:45 AM
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#27 |
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Registered User
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
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Re: fuel mileage k5 blazer guys?
3.73s and th400
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04-13-2013, 12:44 PM
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#28 |
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Registered User
Join Date: May 2011
Location: Grande Prairie, Alberta
Posts: 368
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Re: fuel mileage k5 blazer guys?
I just did the math, I have always been happy with the mileage with my 1991 suburban. I went to Edmonton last year and have the reciepts so I thought it would be interesting. 18.2 mpg and yes that is US gallon. The original owner said that he could get 21mpg with a light foot. and based on my driving experience he might be right. 18.2 is running 120k in a 110 zone. He claimed that if you could drive 100kph you would get 21, who can drive 100 kmh?
The burb is a 350, 700r4 , cold air intake and a K+n conical filter. Im not certain of the rear diff ratio, but its no rocket off the line! |
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04-13-2013, 08:50 PM
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#29 | |
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I know the pieces fit
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,523
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Re: fuel mileage k5 blazer guys?
Quote:
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04-15-2013, 10:08 AM
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#30 |
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Registered User
Join Date: Mar 2013
Location: Fayettville Ar
Posts: 19
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Re: fuel mileage k5 blazer guys?
haha i heard you there!! how are you running 4.10s and getting better mpg than me?!?!?!?!
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04-15-2013, 04:37 PM
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#31 |
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been here longer than Liz
Join Date: Feb 2000
Location: Broken Arrow, OK
Posts: 2,437
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Re: fuel mileage k5 blazer guys?
89 Jimmy (the real kind), 350 TBI/700r4 stock gears (?) I get 9.5-11.5. Motor is old & tired. Hope a new crate will help me out. I've already rebuilt the fuel system with no noticeable improvement.
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~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin |
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04-15-2013, 06:45 PM
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#32 | |
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Registered User
Join Date: Feb 2012
Location: Sandy Eggo, CA
Posts: 183
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Re: fuel mileage k5 blazer guys?
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04-15-2013, 10:33 PM
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#33 |
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Registered User
Join Date: Dec 2009
Location: Gap PA
Posts: 280
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Re: fuel mileage k5 blazer guys?
My '86 with a 5.7 TBI [running a 1" Heix spacer, 1/4" injector plenum riser, and .202 Vortecs] got 15 average bolted to a 700R and having 3:08 gears, and it had 33's with 7" of lift.
The same engine went in my current '88 minus the 1/4" injector plenum riser, with an SM465 and the same gearing and it got 18 average.
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1991 Mustang GT Vert, T-5 w/ Pro 5.0, Trick Flow upper & lower, BBK cold air intake, 3:73, BAMA chip, etc. 1988 K5 Blazer, [coming soon] TBI 400, SM465/NP208, 12 bolt rear, 3:08's, looks like a 1980. 1998 Jeep Grand Cherokee 4.0 fully loaded daily driver! Where there's a will, there's a rig! |
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04-16-2013, 03:29 PM
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#34 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: fuel mileage k5 blazer guys?
well the 79 Jimmy 4X2-305-2B@3.4 rear, is a heck of alot better then the 78 jimmy 4X4 350/350......
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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. I get 22mpg with 6.2,700r4,4.10,35" tires. Classic big 4wd that gets modern day economy. I love it!
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