how many MPG do you get? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jonathan-m · 07-05-2009, 11:23 PM

I have a 350 SB with a 4- barrel edlebock carb in my '66 stepside and although my gas gauge doesn't work, I think I average something like 10mpg... pretty crappy

Of course, I don't really practice many economical driving habits ( read: I have a lead foot

)
SO I'm thinking that could have something to do with it....

Whats your configuration and what do you all get per gallon?

alexxwing · 07-05-2009, 11:26 PM

well when i was driving on the freeway with my 327 4 speed granny tranny i could see my gas guage go down haha so im guessing bad mpg

sixfour4x4 · 07-05-2009, 11:32 PM

i don't want to know.i've got a 350 4bbl edelbrock carb 650..i just know that i spend ~60$ a week...and i don't drive much....and i also do not have a soft foot, i leave a rubber trail on my way to work to make sure i can find my way home

BMSJaX · 07-06-2009, 10:58 PM

SBC 350, Q-jet 4 bbl, Holley Street Dominator Single-plane, 190 degree thermostat, 1-3/4" primary to 3" headers and cherrybomb turbos and i'm getting 12mpg street/15highway.

ruffrida2005 · 07-07-2009, 12:29 AM

I've got a 350, stock heads built, enlarged valves 2.02/1.60, Flat tops, comp cam 489 lift duration, roller tips, air gap intake, Holley 750, Hooker shorties. I was getting less then 10 before the rebuild with better parts.

jwart · 07-07-2009, 12:54 AM

65 fleet lwb, 327-2hump heads - ramhorns & dual pipes, performer intake, came with 850 qjet - stock 3 spd -411 open rear end. was running 9-10mpg with it. next came 750 holley & th 400. for 10-11mpg. holley 650 & 3 mo. of adding 2 oz. acetone to ea. tank now getting at least 12 if not leaving forensic clues at the scene of the crime. shopping for 600 carb & starting on ram air scoops in hood as we speak. still getting better than 12 yrs. in junk heap it had b4 i found it.

MacAttack · 07-07-2009, 09:53 AM

Not directly related, but my 65' Chevelle with a 350 crate motor and Edlebrock 4-barrel 650 cfm gets 12 mpg - on the freeway - if I just go a steady 65 mph on flat ground. Never get better than 10 mpg driving around town.

Mac.

1Bad62Pro/Street · 07-07-2009, 09:59 AM

Since my truck is on Jack Stands....... 0 mpg....
Ha ha..... Sorry. I had to! Can't really remember what she got before.
15mpg on the highway I think if I kept my foot off of it.
http://67-72chevytrucks.com/vboard/s...=321173&page=2

dallas71 · 07-07-2009, 10:03 AM

BMSJax, what transmission and gears aare u running?

**ChiefRocka** · 07-07-2009, 10:26 AM

ob1monkey · 07-07-2009, 11:58 AM

running a healthy 350 with block hugger and 3 inch pipe t-5 and 3.08 posi out back getting 15 highway 12/13 city used to get 15 city and 17 highway before I added the the cam and heads.

BMSJaX · 07-07-2009, 11:11 PM

Quote:

Originally Posted by dallas71

BMSJax, what transmission and gears aare u running?

I'm running a Munice 4-speed (m20) 2.56/1.91/1.48/1.00 i belive and 3.54 or 3.73 cant remember and cant find the paper i have it all written on

jonathan-m · 07-07-2009, 12:11 PM

Well at least I'm not alone

I can't tell you how many times I've run outta gas on the interstate in this truck. I fill her up using the 10mpg average to guess how much I need, and usually that works just fine if I drive nice and steady... its when I start hitting the high numbers on those long stretches of road... its all fun for a while then its cough.. cough... put..put.. and your on the side of the road. I always carry a full two gallon spare gas can in the back for this very reason

07SSSC · 07-07-2009, 11:45 PM

I was pleasantly surprised to find I got 12-13 mpg on my recent freeway trip which was about 140-150 miles total. Turned 4000+ rpm (according to stock tach) at 65-70 mph most the way too. 383 stroker, 750 Edelbrock, decent cam, stock THM350, 3.73 and relatively small diameter tires. Around town? 8-10 mpg.

Bazooka · 07-08-2009, 12:04 AM

anybody running a 700r4 and around a 3:73 gear? If so whats your mileage?

**Corts60** · 07-08-2009, 12:56 AM

Also, not my GMC, but my Nova SS gets 15 MPG on the highway. I'm running a 396 with a 650 Holley, Saginaw 4-speed and 2.41 limited slip.

07SSSC · 07-08-2009, 09:33 AM

Quote:

Originally Posted by Bazooka

anybody running a 700r4 and around a 3:73 gear? If so whats your mileage?

x2?

jbgroby · 07-08-2009, 06:16 PM

I get about 12 mpg going downhill with the engine off becasue of the big V-6

**TR65** · 07-08-2009, 09:10 PM

My DD is a C6 Vette and I average 22+ mpg driving back and forth to work and around town, but I drive pretty mildly. Key is good engine and good gearing. That's why I am prepping a 6.0 LS2 with T56 6-speed for my 65. I am counting on getting over 20 average. Will let you know by Christmas.

TR

Jackjohn · 12-22-2012, 08:53 PM

I have to kill mine at the gas station or the gas pump can't catch up!

John
Posted via Mobile Device

bschoolz1 · 12-22-2012, 09:15 PM

any one know what a 230 stock gears get no gas gauge

*Sharps40* · 12-22-2012, 09:16 PM

1964, 117000 miles on original 283, Rochester 2G carb. 3 speed 318 trans w/3.73 rear gear, factory size/width tires on original wheels.

14.5 combined city/highway. Occasionally as high as 16 if its mostly highway and I keep the speed around 60 or so.

hd74 · 12-22-2012, 09:37 PM

1962 gmc suburan 454 with 700r4 qjet ,i think a 307 rearend .i get 13 to 15 mpg or i can get 00000

kerber63 · 12-22-2012, 10:01 PM

When I was running my 350 with a big Qjet, camaro T5, and open 3.73, I could get 18 highway. Hoping to improve with a 454 with rebuilt Qjet, camaro T56, and posi 4.11. Wish me luck.
Posted via Mobile Device

**TBONE1964** · 12-23-2012, 04:50 PM

Both of my old Chevy's get 12.8 GPM (gallons per mile )

07-05-2009, 11:23 PM	#1
jonathan-m Registered User Join Date: Feb 2007 Location: Phoenix Az Posts: 432	how many MPG do you get? I have a 350 SB with a 4- barrel edlebock carb in my '66 stepside and although my gas gauge doesn't work, I think I average something like 10mpg... pretty crappy Of course, I don't really practice many economical driving habits ( read: I have a lead foot ) SO I'm thinking that could have something to do with it.... Whats your configuration and what do you all get per gallon? __________________ Rockin' a '66 and loving every minute of it Last edited by jonathan-m; 07-05-2009 at 11:24 PM.

07-05-2009, 11:26 PM	#2
alexxwing Registered User Join Date: Jul 2009 Location: san jose CA Posts: 62	Re: how many MPG do you get? well when i was driving on the freeway with my 327 4 speed granny tranny i could see my gas guage go down haha so im guessing bad mpg __________________ Smoke Tires, Not Drugs!

07-05-2009, 11:32 PM	#3
sixfour4x4 Registered User Join Date: Jan 2009 Location: Reno, NV Posts: 92	Re: how many MPG do you get? i don't want to know.i've got a 350 4bbl edelbrock carb 650..i just know that i spend ~60$ a week...and i don't drive much....and i also do not have a soft foot, i leave a rubber trail on my way to work to make sure i can find my way home __________________ '64 4x4 Stepside 350/sm420, going L92 in the near future '05 GTO that gets more attention than my truck '69 Jeepster Commando that needs more attention than my truck '71 wagoneer that gets less mpg than the gto

07-06-2009, 10:58 PM	#4
BMSJaX Registered User Join Date: Sep 2008 Location: Trabuco Canyon, CA Posts: 173	Re: how many MPG do you get? SBC 350, Q-jet 4 bbl, Holley Street Dominator Single-plane, 190 degree thermostat, 1-3/4" primary to 3" headers and cherrybomb turbos and i'm getting 12mpg street/15highway. __________________ 1964 Chevy C10 a.k.a. Julie Ann H.E.I. cause its better to be pointless Last edited by BMSJaX; 07-06-2009 at 11:04 PM.

07-07-2009, 12:29 AM	#5
ruffrida2005 Member of the longbed union. Join Date: Feb 2009 Location: Killeen, Tx Posts: 2,158	Re: how many MPG do you get? I've got a 350, stock heads built, enlarged valves 2.02/1.60, Flat tops, comp cam 489 lift duration, roller tips, air gap intake, Holley 750, Hooker shorties. I was getting less then 10 before the rebuild with better parts. __________________ Paul 88 GMC Crew Cab dually, 454/T400 64 LWB 400 HP 350/350T Bagged, under construction! Sold most of it! 92 S10 Iron Duke 5 speed, 5/7 drop for now. soon to be bagged. Sold http://67-72chevytrucks.com/vboard/s...59#post4637759

07-07-2009, 12:54 AM	#6
jwart Registered User Join Date: Sep 2003 Location: n.e. IL border Posts: 208	Re: how many MPG do you get? 65 fleet lwb, 327-2hump heads - ramhorns & dual pipes, performer intake, came with 850 qjet - stock 3 spd -411 open rear end. was running 9-10mpg with it. next came 750 holley & th 400. for 10-11mpg. holley 650 & 3 mo. of adding 2 oz. acetone to ea. tank now getting at least 12 if not leaving forensic clues at the scene of the crime. shopping for 600 carb & starting on ram air scoops in hood as we speak. still getting better than 12 yrs. in junk heap it had b4 i found it.

07-07-2009, 09:53 AM	#7
MacAttack 283 Drama Queen Join Date: Dec 2004 Location: Surf City, CA Posts: 2,435	Re: how many MPG do you get? Not directly related, but my 65' Chevelle with a 350 crate motor and Edlebrock 4-barrel 650 cfm gets 12 mpg - on the freeway - if I just go a steady 65 mph on flat ground. Never get better than 10 mpg driving around town. Mac. __________________ For about 12 years of my adult life I had a severe speech impediment. My ex-wife never let me get a word in edgewise.

07-07-2009, 09:59 AM	#8
1Bad62Pro/Street "Where were you in '62?" Join Date: Jul 2004 Location: Cleveland County, North Cackalacky Posts: 5,013	Re: how many MPG do you get? Since my truck is on Jack Stands....... 0 mpg.... Ha ha..... Sorry. I had to! Can't really remember what she got before. 15mpg on the highway I think if I kept my foot off of it. http://67-72chevytrucks.com/vboard/s...=321173&page=2 __________________ PROJECT: "FULL METAL YELLOW JACKET" 1962 Chevy C-10 Stepside Shortbed Nostalgia Pro/Street Pickup Truck PROJECT: "FULL METAL YELLOW JACKET Build Thread What Are You Workin' On? - 1Bad62ChevyPickup PROJECT: "TYRANNORAMBLER REX" 1969 AMC Rambler American Nostalgia Pro/Street Youtube Channel: Father Son Projects Youtube Channel: 2TIMOTHY2FITHTEEN "North and South Carolina Folks Click Here!" (((( ~ I have Parts For Sale & Miscellaneous Stuff ~ )))) "Well being as there's no other place around the place, I reckon this must be the place, I reckon...Nyuk Nyuk Nyuk" -Curly Howard Ph.D.

07-07-2009, 10:03 AM	#9
dallas71 Registered User Join Date: Mar 2004 Location: Corinth,TX Posts: 444	Re: how many MPG do you get? BMSJax, what transmission and gears aare u running? __________________ My 1966 LWB Truck My 1966 SWB Truck

07-07-2009, 10:26 AM	#10
ChiefRocka Hollister, CA. Join Date: Sep 2006 Location: Hollister, Ca. Posts: 6,150	Re: how many MPG do you get? __________________ John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!"

07-07-2009, 11:58 AM	#11
ob1monkey Registered User Join Date: Dec 2008 Location: sanford,fl Posts: 185	Re: how many MPG do you get? running a healthy 350 with block hugger and 3 inch pipe t-5 and 3.08 posi out back getting 15 highway 12/13 city used to get 15 city and 17 highway before I added the the cam and heads.

07-07-2009, 12:11 PM	#13
jonathan-m Registered User Join Date: Feb 2007 Location: Phoenix Az Posts: 432	Re: how many MPG do you get? Well at least I'm not alone I can't tell you how many times I've run outta gas on the interstate in this truck. I fill her up using the 10mpg average to guess how much I need, and usually that works just fine if I drive nice and steady... its when I start hitting the high numbers on those long stretches of road... its all fun for a while then its cough.. cough... put..put.. and your on the side of the road. I always carry a full two gallon spare gas can in the back for this very reason __________________ Rockin' a '66 and loving every minute of it

07-07-2009, 11:45 PM	#14
07SSSC Registered User Join Date: Apr 2009 Location: Buhl, ID Posts: 288	Re: how many MPG do you get? I was pleasantly surprised to find I got 12-13 mpg on my recent freeway trip which was about 140-150 miles total. Turned 4000+ rpm (according to stock tach) at 65-70 mph most the way too. 383 stroker, 750 Edelbrock, decent cam, stock THM350, 3.73 and relatively small diameter tires. Around town? 8-10 mpg. __________________ '69 Chevy C/10-under reconstruction -- '68 C20 Camper 50th Anniversary-runs, but sorely needs a resto -- '07 Cobalt SS/SC-very fun DD -- '93 Chevy K2500-LQ4/4L80E swap -- '84 Trans Am-awaiting (LS) drivetrain -- '00 Trans Am-road tripper -- '06 Z06-577 WHP beast

07-08-2009, 12:04 AM	#15
Bazooka Keepin it old school Join Date: Jul 2008 Location: Ca Posts: 672	Re: how many MPG do you get? anybody running a 700r4 and around a 3:73 gear? If so whats your mileage?

07-08-2009, 12:56 AM	#16
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: how many MPG do you get? Also, not my GMC, but my Nova SS gets 15 MPG on the highway. I'm running a 396 with a 650 Holley, Saginaw 4-speed and 2.41 limited slip. __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)



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07-08-2009, 06:16 PM	#18
jbgroby Registered User Join Date: Nov 2008 Location: Lacombe, LA Posts: 2,772	Re: how many MPG do you get? I get about 12 mpg going downhill with the engine off becasue of the big V-6 __________________ http://s1299.photobucket.com/user/jb...23904108567829

07-08-2009, 09:10 PM	#19
TR65 Senior Member Join Date: Nov 2007 Location: Greenville, SC Posts: 873	Re: how many MPG do you get? My DD is a C6 Vette and I average 22+ mpg driving back and forth to work and around town, but I drive pretty mildly. Key is good engine and good gearing. That's why I am prepping a 6.0 LS2 with T56 6-speed for my 65. I am counting on getting over 20 average. Will let you know by Christmas. TR __________________ 1965 C10 SWB Fleet Two owner LS2 Swap Thread http://67-72chevytrucks.com/vboard/s...d.php?t=413880

12-22-2012, 08:53 PM	#20
Jackjohn Registered User Join Date: May 2012 Location: Mineola, tx Posts: 54	Re: how many MPG do you get? I have to kill mine at the gas station or the gas pump can't catch up! John Posted via Mobile Device

12-22-2012, 09:15 PM	#21
bschoolz1 Registered User Join Date: Nov 2012 Location: raleigh nc Posts: 41	Re: how many MPG do you get? any one know what a 230 stock gears get no gas gauge

12-22-2012, 09:16 PM	#22
Sharps40 Account Suspended Join Date: Oct 2012 Location: here Posts: 2,408	Re: how many MPG do you get? 1964, 117000 miles on original 283, Rochester 2G carb. 3 speed 318 trans w/3.73 rear gear, factory size/width tires on original wheels. 14.5 combined city/highway. Occasionally as high as 16 if its mostly highway and I keep the speed around 60 or so.

12-22-2012, 09:37 PM	#23
hd74 Registered User Join Date: Jun 2009 Location: shellman bluff,ga Posts: 250	Re: how many MPG do you get? 1962 gmc suburan 454 with 700r4 qjet ,i think a 307 rearend .i get 13 to 15 mpg or i can get 00000

12-22-2012, 10:01 PM	#24
kerber63 Registered User Join Date: Nov 2011 Location: Salem, OR Posts: 281	Re: how many MPG do you get? When I was running my 350 with a big Qjet, camaro T5, and open 3.73, I could get 18 highway. Hoping to improve with a 454 with rebuilt Qjet, camaro T56, and posi 4.11. Wish me luck. Posted via Mobile Device

12-23-2012, 04:50 PM	#25
TBONE1964 Cluster King Join Date: Nov 2012 Location: Junction City, OR Posts: 5,263	Re: how many MPG do you get? Both of my old Chevy's get 12.8 GPM (gallons per mile )

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