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08-18-2006, 12:56 PM
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#26 |
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Jamie Hyneman is my twin
 
Join Date: Nov 2005
Location: La Junta, Colorado
Posts: 705
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Re: Best MPG for a 4wd 67-72
I get 7.5 mpg with my 67.
It has a 283 2bbl, 4 spd, Rockwell 221, 3.73 posi, 235/70/15 wranglers. My bicycle gets infinatley better milage so I will ride it to work.
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Justin SOLD 1967 K10 Fleetside, 283, Front and Rear Posi SOLD Color Wiring Diagrams Now in High Resolution V8 and Cab and Cab and Chassis |
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08-18-2006, 01:20 PM
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#27 |
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Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Best MPG for a 4wd 67-72
I would have thought a 283 with a mild setup and 3.73's would have gotten into the teens for sure, are you sure something isn't seriously out of tune?
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's  1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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08-18-2006, 08:10 PM
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#28 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,212
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Re: Best MPG for a 4wd 67-72
 Sounds like something is half a bubble off plum. 
Last edited by JAKES 68GMC; 08-18-2006 at 08:12 PM. |
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08-18-2006, 08:19 PM
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#29 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: Best MPG for a 4wd 67-72
It`s 400-500 cfm all the time.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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08-18-2006, 09:21 PM
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#30 |
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Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Best MPG for a 4wd 67-72
If it were at full throttle, yes, but at partial throttle, it should be running 200cfm give or take a couple cfm....I would guess there would have to be a couple of things out of wack for a such a small sbc to get worse than bbc mileage.....either that or boundstaffpress has a really heavy right foot
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! Last edited by shelby987; 08-18-2006 at 09:21 PM. |
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08-18-2006, 10:04 PM
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#31 |
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Tool Addiction=Money Shortage
Join Date: Mar 2006
Location: Grand Forks, ND
Posts: 233
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Re: Best MPG for a 4wd 67-72
In my 67 k/20 with the old 305 v8 sm465/205 4.56 35inch tire setup it would would pull down 11mpg highway @ 60. I dont even bother checking mpgs in the winter or around town driving it would just depress me.
Just fired the new 400sbc and fresh Q-jet yesterday looking forward to driving it and checking the new mileage. |
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