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Old 03-20-2005, 05:07 PM   #51
beagler
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I'm guessing on my 71 bored 30 over, cam'd, other preformance acc.'s old 3 speed, and a stock 3.07 gear ratio I get about 12 in town
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Old 03-20-2005, 11:55 PM   #52
gabet40
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took it for its first road trip since the drivetrain restoration this weekend and got 12mpg through the 4 days. fuel injected, 350/350 with a 3.08 rear end
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69 1/2 ton, change from long/fleet to short/fleet, shaved door handles, shaved tailgate, 4/6 drop, power windows, 700r4
72 blazer, 350 with Holley Commander 950 DFI, crane energizer cam, 350 tranny, dual sanderson blockhuggers/magnaflow exhaust
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Old 03-21-2005, 07:30 AM   #53
dwaite72lnghrn
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My old 402/th400/qjet/crane hmv-272 cam/4.1 rear/9.50x16.5 bias would get 10.5mpg around home and 13.5mpg highway@55mph, 3200lb slidein camper it would get 8.5-9.5mpg highway no head wind.
Since the rebuild same cam/engine combo but a new edelbrock 1411 carb and HEI, best sofar was 11mpg, average around home 9.5mpg, towing a 5500lb travel trailer around home 6.75mpg. Thinking of going back to the QJET.
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72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper
72 bug(the better half's) under reconstruction
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71 GMC k20 350/sm465
2009 Chevy hd3500 6.6 Victory Red crew cab dually
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Old 03-21-2005, 10:44 AM   #54
miket
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Probbaly no better than 5mpg.
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Old 03-21-2005, 11:34 AM   #55
FRENCHBLUE72
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About 12 with a crate 350 th350 and 3:73 gears..
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72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free.

Project "7DEUCE"

check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665



Tim Powell..R.I.P EastSideLowlife..... R.I.P..
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Old 03-21-2005, 03:35 PM   #56
wyoman64
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'69 K20, 350/265 Hi-Torque + Q-jet + stock ramshorns w/ dual exhaust + 33" tires + SM465 4-speed + 4:55's = 11mpg

Hence, the 50 gallon auxillary tank in the bed . . .
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Last edited by wyoman64; 03-21-2005 at 03:39 PM.
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Old 03-21-2005, 06:01 PM   #57
Perchjerker
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On our recent trip to Boykin Springs Park, about 64 miles each way, the truck got there on a quarter tank and we returned on another quarter. 128 miles on half a tank of gas, or I guess about 7.5 gallons of gas. 128 divided by 7.5 equals around 17.06 miles per gallon. The truck is totally stock from factory, 307 V-8, 2bbl carb, 3 speed column shift and no air. I was running 4 brand new tires and just had an alignment done as well.
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