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06-01-2007, 01:21 AM
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#1 |
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Registered User
Join Date: May 2007
Location: Crockett, Texas
Posts: 581
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gas mileage
ok, i was just thinking...i dont know what kind of gas mileage my truck would get
 . it is a 1969 with a 1990 bed, it has a 350 motor and a 350 turbo trans., headers, and a edelbrock 4bbl carb. can someone please give me an estimate as to how good/bad the gas mileage is? the reason i dont know, is because i havent gotten a chance to drive the truck much and the gas gauge doesnt work. so can somebody please help me out?thanks in advance c-mack 
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1967 chevy truck 350 V8 1973 VW Transporter/Hippy Bus 1964 VW Baja Bug "When the power of love overcomes the love of power the world will know peace"- Jimi Hendrix 
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06-01-2007, 01:35 AM
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#2 |
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Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: gas mileage
Just a guess but I'd say around 12 mpg?? It also depends on your driving style, how well it's all setup, etc.
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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06-01-2007, 01:54 AM
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#3 |
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Registered User
Join Date: May 2007
Location: Crockett, Texas
Posts: 581
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Re: gas mileage
...well i drive sorta slow/normaly just the speed limit. im very cautious. i dont want to wrap my project/money pit around a tree. and what do you mean about the setup?
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1967 chevy truck 350 V8 1973 VW Transporter/Hippy Bus 1964 VW Baja Bug "When the power of love overcomes the love of power the world will know peace"- Jimi Hendrix
Last edited by c-mack; 06-01-2007 at 01:56 AM. |
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06-01-2007, 01:18 PM
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#4 | |
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Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: gas mileage
Quote:
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- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 |
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06-01-2007, 07:41 AM
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#5 | |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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Re: gas mileage
Quote:
Fill it up. Write down the mileage on the odometer (1). Drive it for a while. (I suggest 200 or less miles because you got a 20 gallon tank and most trucks get 10 or so mpg). Fill it up again. Write down how many gallons you bought (3). Write down the mileage (2). Subtract the mileage (1) from the mileage (2). That is how far you drove. Divide that by your second tank (3). Miles over gallons = miles per gallon.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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06-01-2007, 12:14 PM
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#6 |
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Registered User
Join Date: May 2007
Location: Crockett, Texas
Posts: 581
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Re: gas mileage
 ...odometer doesnt work either. none of my guages do
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1967 chevy truck 350 V8 1973 VW Transporter/Hippy Bus 1964 VW Baja Bug "When the power of love overcomes the love of power the world will know peace"- Jimi Hendrix
Last edited by c-mack; 06-01-2007 at 12:17 PM. |
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06-01-2007, 12:40 PM
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#7 | |
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Registered User
Join Date: Oct 2006
Location: Cheney, KS
Posts: 669
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Re: gas mileage
My truck would average about 7mpg...
But I was also always running late and flying about 85-90mph and rapping 4500RPMs or so. Anywho....its kind of funny being able to accually see your gas guage move.
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06-01-2007, 12:45 PM
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#8 |
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Hittin E-Z Street on Mud Tires
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: gas mileage
I'd say closer to 10-12. I have the same set-up, but with a 700R4, but I do a lot of "city driving" (35-50 mph) so I use OD rarely. I get about 13 mpg. I get 15-16 highway.
You'll get decent mileage 55 and less, but once you start gettin up in the rpms from the 3 speed you're mileage will go down. All trucks are different. Some peeps say they only get 7 or 8 mpg out of a 350/350 combo while other's claim 12 or 13. A lot has to do with driving style.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God  1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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06-01-2007, 04:34 PM
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#9 |
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Registered User
Join Date: Jan 2007
Location: Camarillo, CA
Posts: 64
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Re: gas mileage
Damn, I wish... 7 is great, even with the OD... But then again, I cant keep my foot out of it either...
Something about 150ft black lines just brings a tear to my eye...
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1970 C10, shortened long bed, Alum Headed full roller 383 (with Victor, 750DP, stainless rockers, behive springs, CNC ported heads) TCI SSF 700R4, 4.10 Posi, Bagged on C-Notch and 2.5 spindles. Air Cond, black out tint, satin black paint, custom interior, rolling low and not so slow... |
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06-02-2007, 01:53 AM
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#10 |
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The Original HotRod KnifeMaker
Join Date: Jan 2007
Location: Tenino, Washington
Posts: 811
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Re: gas mileage
Just got mine out of the shop for some serious road tests today. Probably drove 40 miles and used 6 gallons of gas.
396/t400/3.73 Waiting for 2.92s to be delivered. May help some on the mileage, but the main reason is to keep the RPMs down on the freeway. I will NEVER check my mileage. I love this truck, and when it needs gas I will just fill it up. Spell that F U N . 
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Dave 69 GMC SWB 2WD 454 Turbo 400 |
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06-02-2007, 02:39 AM
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#11 | |
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Registered User
Join Date: Apr 2007
Location: Kelso, WA
Posts: 363
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Re: gas mileage
Quote:
That way you know it looks good the next day!
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1972 K10 4" lift, 35’s, 383 stroker, 700r4, current project. 1971 C10 3"/5" static drop, 355/350. "La Bamba.” The current daily driver. |
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06-02-2007, 07:41 AM
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#12 | |
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Chevy Guy
Join Date: Jan 2007
Location: Chesapeake City, Maryland
Posts: 35
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Re: gas mileage
Quote:
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Juergen Juergen and Ana's Web Page '54 Belair '57 Townsman 210 '67 Malibu Vert '71 C10 '96 Vette LT4 |
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06-02-2007, 08:17 AM
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#13 |
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Junior Member
Join Date: Dec 2006
Location: Southeast Missouri
Posts: 2,436
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Re: gas mileage
My ole farm truck gets between 12 and 13 mpg as close as I can tell. I am not real sure because it has 31x10.5x15 tires on the back.
It is more or less a stock 350 with duals and a later year HEI dizzy. It has a compound 4 speed with 3.73 gears in the rear. Of course I drive pretty slow being an ole farrmer. When I was young it was a different story, in the 70's I had a 69 AMX with a 390 that would go like heck. Danny -SEMO |
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06-02-2007, 08:41 AM
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#14 |
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laying low
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,457
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Re: gas mileage
"your mileage may vary"...........You really can't go by what someone says they get with a like combination as there as so many variables. It would be safe to say you will get between 7 and 20.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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06-02-2007, 08:05 AM
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#15 |
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Registered User
Join Date: Apr 2007
Location: Norman, OK
Posts: 222
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Re: gas mileage
I was getting about 10mpg before I re-tuned my "e-bay special" Edelbrock 1406 (it was tuned about as rich as it could get). I changed the primary rods and jets back to stock and that improved mileage to 13mpg. I have a wideband AFR monitor that I'm using to try to squeeze out even more.
Bad news is that my TH400 is on the blink, so right now, I get real close to 0mpg....  HomerJ |
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