So what's your gas mileage? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sgtjed · 06-19-2003, 03:50 AM

well i get crap milage,i just filled it up 2 days ago and am on a 1/4 tank now. i drive 32 miles a day to and from work on the highway.
the rear in it now is a 3:73. i have a 5 lug 3:07 in the bed and the speedo is way off right now. i hope to get better milage when i put the new rear in and have the speedo working right again as the trans is geared for a 2:73 rear.
i think the worn out carter is more of a culprit though for the bad milage,or edelbrock if ya preffer

guess i could put the holly 600 on it and see if it gets better.

**JIMs70GMC** · 06-19-2003, 05:00 AM

8-10 depending on amount of highway driving.

*Gee_Emm* · 06-19-2003, 09:17 AM

I was wanting to keep the 6 just for uniqueness, and was planning to go with an automatic. Will an overdrive tranny hook up to that and if so would there be any point in doing so? What gears are best to have out back for mileage? Dumb question but can you get fuel injection for a straight six? :p

6869704X4 · 06-19-2003, 09:25 AM

Quote:

Originally posted by ABHaulR
Oh Boy! How about 8 mpg in the city or on the highway, rolling tall or pulling a long haul.

But then again, it's 337,000 original miles on an mildly tired 350.
We currently have 4:11's. on 40" Tires.

Wonder what the mileage is on the rig behind yours in the pic.

06-19-2003, 03:50 AM	#26
sgtjed What if? Join Date: Oct 2002 Location: Choctaw,Oklahoma Posts: 649	well i get crap milage,i just filled it up 2 days ago and am on a 1/4 tank now. i drive 32 miles a day to and from work on the highway. the rear in it now is a 3:73. i have a 5 lug 3:07 in the bed and the speedo is way off right now. i hope to get better milage when i put the new rear in and have the speedo working right again as the trans is geared for a 2:73 rear. i think the worn out carter is more of a culprit though for the bad milage,or edelbrock if ya preffer guess i could put the holly 600 on it and see if it gets better. __________________ 2002 red extended cab Silverado 2002 Wheatland yellow Suburban

06-19-2003, 05:00 AM	#27
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	8-10 depending on amount of highway driving. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

06-19-2003, 09:17 AM	#28
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	I was wanting to keep the 6 just for uniqueness, and was planning to go with an automatic. Will an overdrive tranny hook up to that and if so would there be any point in doing so? What gears are best to have out back for mileage? Dumb question but can you get fuel injection for a straight six? :p



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