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05-14-2010, 07:16 AM
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#26 | |
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The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: engines and mileage
Quote:
 .That's the way I feel about my 502 @ 13 mpg !!! 
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93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz !  The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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05-14-2010, 07:42 AM
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#27 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: engines and mileage
duno what i get mpg but i get there.....during the summer i flip the breather top,i find this seems to help,nice of gm to make to breather tops work like that,cars too!!Anybody else try this?
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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05-15-2010, 09:13 AM
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#28 |
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Registered User
 
Join Date: Jun 2009
Location: Lawson Mo
Posts: 147
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Re: engines and mileage
That's how I ran my old 84 Caprice that I had during the summer time.
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2006 Silverado 2500 HD |
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05-23-2010, 08:45 AM
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#29 |
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Registered User
Join Date: May 2010
Location: laurel hill Fl
Posts: 645
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Re: engines and mileage
my 305 gets 15 on a good day but put it in traffic an i'm getting gallons to the mile
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1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ]  1999 k3500 crew cab dually 6.5tdi/4l80e |
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05-23-2010, 09:20 AM
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#30 |
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Live fast, die young
Join Date: Sep 2006
Location: Northwest Ohio
Posts: 293
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Re: engines and mileage
For proper mpg checking, I suggest using a GPS to check your mileage. An odometer discrepency can cause over-confidence (I've learned this personally). No matter how perfect you think your tire/gear/trans speedo is setup, it may be off by a bit. And while it isn't much, it skews the data big time over long miles (which is what you usually go by for mpg).
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