6.0 4l80e fuel mileage? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68chevyLQ4 · 02-21-2011, 04:41 PM

I was wondering how much mpg I can expect? 68 c10 swb pickup. Stock 6.0 lq4 with 4l80e trans 3:73 gears. Thanks guys
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OldCreek · 02-21-2011, 10:43 PM

My '71 4wd K5/Blazer with 4" lift, 35" MT tires, locked 4.11 gears, no top ...gets about 10.5 mpg. I've got a LQ9, 4l60E, NP205. I have a medium foot... I like to hear her take off!

Big Port Jimmy 6 · 02-22-2011, 12:16 AM

Look for some posts by Shon Herron. He is getting 17 or better IIRC Jay

matthew20061 · 02-22-2011, 03:53 AM

Well this isn't in a 67-72 but in my Silverado SS with full time AWD, LQ9, 4l65E and 4.10's I get about 13 MPG in the city and up to 17 on the highway so I would say you should get about the same if not even better because the SS weights almost 5,000 lbs where 67-72 are quite a bit lighter.

skoffice · 02-22-2011, 04:23 AM

My dad has an AWD Yukon and he gets about the same, maybe a little less, with a 5.3. 12 in town, 17 on freeway. My buddy on the other hand, had a short regular cab 2wd 04 sierra with a 4.8 and auto, and he would AVG. 19 mpg and I kid you not, he drove that damn thing like it was a racecar! Manually shifting the auto everywhere he went just so he could hear his exhaust (cutout) rev. I know it's a smaller engine but probably a comparable truck weight wise. He had 3.73's and 20's on 40 series tires.

02-21-2011, 04:41 PM	#1
68chevyLQ4 Registered User Join Date: Jan 2011 Location: California Posts: 126	6.0 4l80e fuel mileage? I was wondering how much mpg I can expect? 68 c10 swb pickup. Stock 6.0 lq4 with 4l80e trans 3:73 gears. Thanks guys Posted via Mobile Device

02-21-2011, 10:43 PM	#2
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: 6.0 4l80e fuel mileage? My '71 4wd K5/Blazer with 4" lift, 35" MT tires, locked 4.11 gears, no top ...gets about 10.5 mpg. I've got a LQ9, 4l60E, NP205. I have a medium foot... I like to hear her take off! __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

02-22-2011, 12:16 AM	#3
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	Re: 6.0 4l80e fuel mileage? Look for some posts by Shon Herron. He is getting 17 or better IIRC 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.

02-22-2011, 03:53 AM	#4
matthew20061 69' Chevy Stepside Join Date: Mar 2008 Location: Anchorage, Ak Posts: 526	Re: 6.0 4l80e fuel mileage? Well this isn't in a 67-72 but in my Silverado SS with full time AWD, LQ9, 4l65E and 4.10's I get about 13 MPG in the city and up to 17 on the highway so I would say you should get about the same if not even better because the SS weights almost 5,000 lbs where 67-72 are quite a bit lighter. __________________ -Matthew -69' Chevy Custom/10 Shortbed Stepside 2WD "Copperhead" - Restored, 6.0L LQ9 Built. L92 Heads and LS3 Intake with Comp Cam 223/231 .610/.617 112 LSA, 4L60E with Shift Kit and Circle-D 3200 Stall Converter ~Build Thread -1957 Chevy BelAir 2 Door Post Sedan, Full Frame off Restoration done myself - 6.0L with T56 six speed -1957 Chevy BelAir 2 Door Post Sedan - Nearly rust free AK car, Project in the waiting -2003' Chevy Silverado SS AWD 6.0L! - Daily Driver

02-22-2011, 04:23 AM	#5
skoffice Registered User Join Date: Apr 2007 Location: Elk Grove, CA Posts: 375	Re: 6.0 4l80e fuel mileage? My dad has an AWD Yukon and he gets about the same, maybe a little less, with a 5.3. 12 in town, 17 on freeway. My buddy on the other hand, had a short regular cab 2wd 04 sierra with a 4.8 and auto, and he would AVG. 19 mpg and I kid you not, he drove that damn thing like it was a racecar! Manually shifting the auto everywhere he went just so he could hear his exhaust (cutout) rev. I know it's a smaller engine but probably a comparable truck weight wise. He had 3.73's and 20's on 40 series tires. __________________ 1964 C10 Shortened Shortbed Cammed LQ9 P&P 1967 C10 Trophy Truck BB 438 (soon to be worked on again)



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