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#1 |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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What's your usual MPG?
I think I'm getting 8mpg right now, and it's about 80/20 city/freeway.
355/TH350/4.10 pegleg/28" tire Carb is still untuned... |
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#2 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,288
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8-10 on the 1976 but i dont drive it all that often i get asphixiated with the exhaust in there! I aint had the 1986 running to tell ya about that one
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#3 |
Registered User
Join Date: Mar 2003
Location: Walker, LA
Posts: 2,925
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With the new 350 I've been getting about 13-14.
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Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels |
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#4 | |
Registered User
Join Date: Mar 2003
Location: Walker, LA
Posts: 2,925
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Quote:
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Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels |
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#5 | |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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Quote:
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#6 |
driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
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vortec 350, 2004R and 3.42's with a 2300rpm stall gets me about 9mpg city/18mpg freeway
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-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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#7 | |
Registered User
Join Date: Mar 2003
Location: Walker, LA
Posts: 2,925
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Quote:
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Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels |
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#8 | |
Join Date: Jan 2003
Location: Modesto, CA
Posts: 1,321
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Quote:
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#9 |
Registered User
Join Date: Jul 2001
Location: Atlanta GA
Posts: 1,704
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the 79 4wdK5 I just sold got 12mpg. It had a base crate motor 350,Th350, 3.73 gears, 31 inch tires. Speedo pretty accurate.
My 75 K5 Jimmy gets about 9.5 It's 7ft tall spinning 35 inch BFG muds. Older rebuild motor. 350 Th350,4.10 gears 35's. Speedo reads a little slow might be getting just over 10mpg when you account for that. My 88 Burb got 10MPG this last tank (checked this morning). Only owned the truck a few weeks and chasing problems. Found 4 bad plug wires on it yesterday. Gave it a full tune up and new O2 sensor. See how it does this next tank. I want 12-13 out of it. 454,TH400, 3.73 gears, 235/85x16 (roughly 31 inch tire). Then I might look inot a Gearvendors OD. See if I can get it up to 16mpg with OD. I know 350 FI OD burbs can pull 18 hwy. Just bought a GPS last week and going to get a good GPS millage reading and recheck the 75 and 88.
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Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project |
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#10 |
I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,775
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13-14 in the city
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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#11 |
Registered User
Join Date: Mar 2003
Location: Uvalde, Tx
Posts: 407
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My 1969 Chevy with a 350/400 combination has a 3:73 rear end and running an HEI, is getting about 12.5 GPM.
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1969 C/10 Longbed undergoing rebuild. Old Chevy's Never Die, They Just Rust Around The Edges |
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#12 |
Registered User
Join Date: Mar 2003
Location: Uvalde, Tx
Posts: 407
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12.5 is a mix of freeway and city, I caculated it last night on a 180 mile trip from south Texas through San Antonio and Austin
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1969 C/10 Longbed undergoing rebuild. Old Chevy's Never Die, They Just Rust Around The Edges |
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#13 |
Registered User
Join Date: May 2003
Posts: 14
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I usually get about 10-11 mpg thats 350/th350
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#14 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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18 MPG on the highway at 70 MPH
![]() ~14-16 in the city with 700R4 running in 3rd and 1800 stall. ![]() |
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#15 |
Right turn Clyde
Join Date: Nov 2002
Location: Cincinnati, Ohio
Posts: 2,911
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Currently about 4 mpg.
350 bored 30 over - CompCams 270H Mangnum Cam - World Products S/R Torquer 67cc 2.02 intake 1.60 exhaust - Performer RPM intake - 750 CFM 4 barrel Edelbrock that runs a tad rich - 10:1 compression. TH-350 - 2.73s - 31x10.50 Really need to get that Edelbrock leaned out. Its so rich I can stain the drive way/ side walk or anything in the way of my duals when I start it up. lol ![]()
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1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI Last edited by MylilBowTie; 05-07-2003 at 06:17 AM. |
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#16 |
Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,906
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mylil and you need lower gears.
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Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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#17 | |
Account Suspended
Join Date: Nov 2002
Location: Winnipeg, Manitoba, Canada
Posts: 798
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Quote:
![]() Haven't checked in a while, but last summer - low 20's on the highway and upper teens in the city. ![]() ![]() ![]() |
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#18 |
LED King
Join Date: Jan 2003
Location: Sacramento, CA
Posts: 2,088
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10mpg. No matter what I do, it is always just 10. Unless I put it at WOT - then I can just watch the fuel gauge like a stop-watch.
Stock 305 - 3.08 gears - TH700R4
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Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32 |
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#19 |
Registered User
Join Date: Mar 2003
Location: So.Oregon
Posts: 765
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I get 25-30 thats when im pushing it to save gas.lol 10-12 i would say.
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#20 |
Ultimate Diesel Dude
Join Date: Oct 2002
Location: Southwest Missouri
Posts: 328
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19 mpg with 4.10 gears and 700 tranny! That's with a 6.2L diesel pushing it down the road.
In it's previous life, my truck had the stock 305 w/TH350 and 3.42 gears. The best I ever got with that setup was 12 mpg.
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Project truck: '81 C/20 converted to 6.2L TURBO DIESEL bored .040", gear drive, 6.5L injectors/pump, custom pistons, custom 4" exhaust, 700R4, 4.10's Daily Driver: '95 K1500 Tahoe, 6.5L TURBO DIESEL, NP241, 4L80E, 3.42's |
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#21 |
BeWarE tHe eViL CrAnkTOe!
Join Date: Oct 2002
Location: Yukon, OK
Posts: 3,605
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damn...your gettin 80 on the highway!! lol
I get about 10-14 max!! 700R4
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~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - 1986 Chevy Custom SWB *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods ![]() www.cardomain.com/id/ramairdave AIM Screenname - Jester84 |
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#22 |
Rollin' Member
Join Date: May 2003
Location: Hayward, California
Posts: 240
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so i calculated my milage today - a nice round trip commute to work and back is 50 miles mostly hiway. i figured i am getting just around 10 mpg. i guess i am a little shocked.
my 1973 chrysler new yorker brougham 4 door boat with a 440 4bbl gets around the same maybe a little better even. i would have guessed that my 1977 c10 with a lighter body and smaller engine would definately drink less. i am guessing that this is attributed to only having a 3 spd trannsmition.... any ideas? from reading all the posts here i can see what i am getting is average. it's a stock 350 w/ 60k on the rebuild. it has a t350c tranny - only non stock item on it is the flowmaster. i don't know - i am thinking it may definately time to think about upgrading to a tranny w/ OD. any thoughts or insights are welcome. cheers, scott |
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#23 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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My stock 350/350 3:42 275-60-17 in town with 150,000 and a recent tune up (major, carb and all ingition componets) last sept. gets 10 to 11 evey week its a 100mi to work and back 8.5 to 9.5 and thats the wife driving, if she lets me drive on weekends its 10+ gals, go figure !!!!!!
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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#24 |
I love goooooold!
Join Date: Jan 2003
Location: In the middle of Hell, Arizona
Posts: 133
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10-11mpg no matter what I do.
350 V-8, Th-350 3.07s in the rear.. oh yeah, and I'm a lead foot. ![]() Jeff
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"Musha ring dum a doo dum a da Whack for my daddy-o Whack for my daddy-o There's whiskey in the jar-o." |
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#25 |
Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Riptide, your right, from gas station to gas station thats when I get to drive it!! When your gas gauge dosen' start to go down until it has 5 gal. left it goes to empty very fast. I have only been able to but in 14 gal. when it runs out of gas, so we keep it filled up after a 100 miles
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53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42 |
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