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07-21-2020, 08:22 AM
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#1 |
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Senior Member
 
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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5.3 .... whats your best MPG
My 2004 Sierra has 210,00 miles, 5.3, and a BAKFlip G2 Tonneau Cover
Next will be Dual Exhaust. On a trip to Louisville I got 19.3 mpg. Not bad. What's your MPG.
__________________
A husband can be right...or...A husband can be happy.  67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk.  1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc   JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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07-21-2020, 10:01 AM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,566
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Re: 5.3 .... whats your best MPG
Subbed
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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07-21-2020, 04:37 PM
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#3 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,748
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Re: 5.3 .... whats your best MPG
My 02 4wd subruban with 293,000 has done 16 on a freeway trip.
__________________
-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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07-30-2020, 11:21 PM
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#4 |
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Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,471
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Re: 5.3 .... whats your best MPG
Short bed reg cab 2 wheel drive 5.3 I keep getting 16.5 or a lil better in the city even with being heavy on the pedal
Such a fun truck
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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07-31-2020, 08:37 AM
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#5 |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
I am thinking if I add Dual Exhaust I might reach 20 mpg
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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07-31-2020, 02:06 PM
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#6 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,673
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Re: 5.3 .... whats your best MPG
My 99 4wd got 16-17
My 13 4wd gets 16-17 My C30 6.0 gets 16-17..
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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08-02-2020, 01:05 AM
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#7 |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
I need to see what rear axle I have...
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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08-02-2020, 07:35 AM
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#8 |
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State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,228
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Re: 5.3 .... whats your best MPG
My guess would be you have a 3.42 or 3.23. The duals should help, unless your like me and you push down harder cause the truck sounds so much better.
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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08-03-2020, 02:33 PM
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#9 | |
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Moderator
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
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Re: 5.3 .... whats your best MPG
Quote:
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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08-03-2020, 10:49 PM
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#10 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
Quote:
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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08-04-2020, 08:35 AM
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#11 |
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State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,228
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Re: 5.3 .... whats your best MPG
GU4 - 3:07
GU5 - 3.23 GU6 - 3.42 If you got another hollar, and I'll look it up.
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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08-04-2020, 09:58 PM
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#12 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
Quote:
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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08-04-2020, 09:59 PM
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#13 |
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Registered User
Join Date: Jun 2013
Location: ok/tx
Posts: 60
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Re: 5.3 .... whats your best MPG
05 5.3 2wd extended cab 200+ miles avg 16-18 in town on highway about 20
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08-04-2020, 10:27 PM
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#14 |
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Registered User
Join Date: Jan 2016
Location: White House , TN
Posts: 61
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Re: 5.3 .... whats your best MPG
Yesterday I drove from Nashville, TN to Gulf Shores, Al , traffic wasn’t too bad , not too much stop and go. My 2018 Silverado, crew cab ,5.3 , 3 people, luggage , running 73-79 , I averaged 25.5 mpg .
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08-05-2020, 05:57 PM
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#15 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
Quote:
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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08-05-2020, 06:07 PM
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#16 | |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,566
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Re: 5.3 .... whats your best MPG
Quote:
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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08-08-2020, 06:54 PM
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#17 |
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Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,409
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Re: 5.3 .... whats your best MPG
My 2005 SWB, 5.3, 2WD, has the trailer towing option. Has 3.73 gears, locking differential. Has done 20 MPG several times. Bone stock. I like it!!!
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08-12-2020, 12:19 PM
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#18 |
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Registered User
Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 3,051
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Re: 5.3 .... whats your best MPG
2008 Envoy Denali (not the XL), still has AFM active, best I've gotten was 21 highway. 4x4 3.42 gears, G80 locking diff
__________________
'51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com |
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08-12-2020, 03:58 PM
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#19 |
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6>8 Plugless........
Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,142
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Re: 5.3 .... whats your best MPG
I know this isn't quite the same since it isn't in a truck. But I have a 2000 5.3, no egr, 6.0 manifolds with 2.5" exhaust and super 44s, BTR Stage 3 cam, Super T10 and 3.08 gears. It gets 22.5mpg driving a mix of hwy and stop light traffic daily driving it.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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08-12-2020, 07:22 PM
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#20 |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
GT4 G80
So do I have a 3:07 with Posi?
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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08-12-2020, 07:29 PM
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#21 | |
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Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,471
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Re: 5.3 .... whats your best MPG
Quote:
__________________
California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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08-12-2020, 08:58 PM
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#22 |
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Registered User
Join Date: Jan 2016
Location: White House , TN
Posts: 61
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Re: 5.3 .... whats your best MPG
I think I finally figured out how to attach a photo . This was from my trip last week , 25.5 mpg .
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08-13-2020, 08:19 AM
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#23 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
Quote:
Your dash doesn't look like my dash?? Looks like a new generation.
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! Last edited by 70cst; 08-13-2020 at 08:50 AM. |
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08-13-2020, 08:31 AM
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#24 | |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,566
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Re: 5.3 .... whats your best MPG
Quote:
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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08-13-2020, 08:49 AM
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#25 | |
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Senior Member
Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,373
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Re: 5.3 .... whats your best MPG
Quote:
__________________
A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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