gas mileage in a suburban? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

papa g · 06-27-2002, 11:46 AM

hi!!! i am new to this forum and i have a question. i just got an 85 c20 suburban, with the 454 4barrel carb. auto towing package etc, i do not know the axle ratio. what kind of gas mileage can i expect from it??? its got 130K on the odometer and immaculate. i appreciate all replys.

2nova2 · 06-27-2002, 12:17 PM

I think if you got 10 at any point you would be lucky

68 Suburban · 06-27-2002, 02:46 PM

Buddy of mine had one and 8 mpg was all he could muster.

PushinPebbles · 06-27-2002, 05:33 PM

I have a 88 burban W/throttle body fuel injection.............350/700R-4.............4x4 w/ 3.73's............I was told when i bought it , it got 18mpg's ..............hard to beleive but there are exceptions i guess

**1970 CST Short Wide** · 06-27-2002, 05:52 PM

My new 02 Burb just got 18.9 with the cruise at 75 and the AC on, with 6 adults riding YAHOO

Wasted Income · 06-27-2002, 07:29 PM

My '92 K1500 with 3.42s and 161K miles regularly gets between 16-18 on the highway (If I'm not always stomping on it to listen to the Flowmasters)

PushinPebbles · 06-27-2002, 11:07 PM

lmao.............not bad for a 4x4 cinder block huh?...........my ride to high school........................now we have the money my dad wants to use it as a tow rig..................so now Its goin to be lifted 9 in. and have 38 in tires..........................little does he know that there is gonna be 4 10's in the back..............hehe.........it needs new carpet..............it smells like packing grease inside but im working on it...................wish me luck.......................

jflem3 · 06-28-2002, 11:33 AM

my 71' 402 /400/3.54 w/ 10.50/16.5BFG AT's gets about 10 around toen and 11.5 on the highway

the 90' suburban 454/400 TBI 3.73 w 275/70/17 goodyear ATS's pretty much 10-11 everywhere.

an overdrive trans would pay big dividends. for the BB burbs.

toms68cst · 06-28-2002, 12:30 PM

We get around 10-12mpg mostly around-town mixed driving on our 90 350efi. I'm not sure about highway. I don't expect much bertter than 15-17mpg.

2nova2 · 06-28-2002, 12:46 PM

Hey guys papa g doesen't have a 350 or efi ! he has a 3/4 ton 454 Burb. So im sure he won't be getting 15-17 mpg. 454s don't pass to many gas stations but they sure can tow.

06-27-2002, 11:46 AM	#1
papa g Registered User Join Date: Jun 2002 Location: somerset ky Posts: 1	gas mileage in a suburban? hi!!! i am new to this forum and i have a question. i just got an 85 c20 suburban, with the 454 4barrel carb. auto towing package etc, i do not know the axle ratio. what kind of gas mileage can i expect from it??? its got 130K on the odometer and immaculate. i appreciate all replys.

06-27-2002, 12:17 PM	#2
2nova2 Registered User Join Date: May 2000 Location: Rohnert Park, CA Posts: 615	I think if you got 10 at any point you would be lucky __________________ 72 GMC Burb barn door 4X4 350/350 PS PB Tilt ( gone but not forgooten) 64 Chevy II V8 Loaded Wagon 2004 Chevy 2500 HD Sonoma County, Northern CA

06-27-2002, 02:46 PM	#3
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Buddy of mine had one and 8 mpg was all he could muster. __________________ Just sitting here contemplating contemplation.

06-27-2002, 05:33 PM	#4
PushinPebbles My dad's 68 Join Date: May 2002 Location: VA Posts: 444	I have a 88 burban W/throttle body fuel injection.............350/700R-4.............4x4 w/ 3.73's............I was told when i bought it , it got 18mpg's ..............hard to beleive but there are exceptions i guess __________________ Jack M. 67 C-10 SWB 355 built T-350 tranny hurst shifter 17x8in KMC's on michelins, clear tails and back up lights slammedUPDATE i have decided on my bag setup and will post further info when i recieve all the parts **************************** 88 1/2 ton suburban 4x4 350/700R-4having a 9 in lift w/ 38 in tires 4 12 inch Lightning Audios *************************** 87 silverado 3/4ton jacked up 10-12 inches black and rubberized bed coating 35 in michelans ************************** Dad's truck 68 C-10 stepside, 468 BB, tubbed, weld wheels, Nason black,lots more **************************** grand dads truck 68 C-10 stepside fuel inj. 350/700R-4soon in audi silver **************************** 84 toyota pickup 22R 5 speed 2WD slammed, shaved and all the body lines filled w/ buickGN scoop,bout to be sprayed in 2003 mustang green metallic w/ silver flames **************************** S/N=BIGGYTYME@aol.com (hydros) "No fat chics, truck will scrape"

06-27-2002, 05:52 PM	#5
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,185	My new 02 Burb just got 18.9 with the cruise at 75 and the AC on, with 6 adults riding YAHOO __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

06-27-2002, 07:29 PM	#6
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	My '92 K1500 with 3.42s and 161K miles regularly gets between 16-18 on the highway (If I'm not always stomping on it to listen to the Flowmasters) __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

06-27-2002, 11:07 PM	#7
PushinPebbles My dad's 68 Join Date: May 2002 Location: VA Posts: 444	lmao.............not bad for a 4x4 cinder block huh?...........my ride to high school........................now we have the money my dad wants to use it as a tow rig..................so now Its goin to be lifted 9 in. and have 38 in tires..........................little does he know that there is gonna be 4 10's in the back..............hehe.........it needs new carpet..............it smells like packing grease inside but im working on it...................wish me luck....................... __________________ Jack M. 67 C-10 SWB 355 built T-350 tranny hurst shifter 17x8in KMC's on michelins, clear tails and back up lights slammedUPDATE i have decided on my bag setup and will post further info when i recieve all the parts **************************** 88 1/2 ton suburban 4x4 350/700R-4having a 9 in lift w/ 38 in tires 4 12 inch Lightning Audios *************************** 87 silverado 3/4ton jacked up 10-12 inches black and rubberized bed coating 35 in michelans ************************** Dad's truck 68 C-10 stepside, 468 BB, tubbed, weld wheels, Nason black,lots more **************************** grand dads truck 68 C-10 stepside fuel inj. 350/700R-4soon in audi silver **************************** 84 toyota pickup 22R 5 speed 2WD slammed, shaved and all the body lines filled w/ buickGN scoop,bout to be sprayed in 2003 mustang green metallic w/ silver flames **************************** S/N=BIGGYTYME@aol.com (hydros) "No fat chics, truck will scrape"

06-28-2002, 11:33 AM	#8
jflem3 Registered User Join Date: May 2001 Location: Davisburg, MI. USA Posts: 124	mileage my 71' 402 /400/3.54 w/ 10.50/16.5BFG AT's gets about 10 around toen and 11.5 on the highway the 90' suburban 454/400 TBI 3.73 w 275/70/17 goodyear ATS's pretty much 10-11 everywhere. an overdrive trans would pay big dividends. for the BB burbs. __________________ Jim Davisburg, MI 69 Camaro SS LT-1/6-spd 71 C-20custom deluxe burb 402/400 (gonna get back to it) 72 C-10base burb 350/3-spd 79-VW Scirocco GT-3 race car 2.0L/5-spd 02 chevy suburban LT Supercharged dropped on 22's

06-28-2002, 12:30 PM	#9
toms68cst Registered User Join Date: Jun 2000 Location: Bismarck, ND Posts: 4,296	We get around 10-12mpg mostly around-town mixed driving on our 90 350efi. I'm not sure about highway. I don't expect much bertter than 15-17mpg. __________________ Unrestored 68 C-10 CST. Original 327. 4-Speed CH465. 50k or so miles. TREASURER, Drum Brake Club.

06-28-2002, 12:46 PM	#10
2nova2 Registered User Join Date: May 2000 Location: Rohnert Park, CA Posts: 615	Hey guys papa g doesen't have a 350 or efi ! he has a 3/4 ton 454 Burb. So im sure he won't be getting 15-17 mpg. 454s don't pass to many gas stations but they sure can tow. __________________ 72 GMC Burb barn door 4X4 350/350 PS PB Tilt ( gone but not forgooten) 64 Chevy II V8 Loaded Wagon 2004 Chevy 2500 HD Sonoma County, Northern CA



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