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08-11-2005, 09:00 PM
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Poor Fuel Mileage,Need Help
i have a 1986 C-10 with the original 305 motor removed(700R4,3.08 Open Rear)
engine now is 3970010(350?) Hei Dizzy One light spring(silver) one heavy(Black) edelbrock 1400 Carb edelbrock intake Do Not know what Cam 14.8 A/F at 590 RPM (cO2 12.7) 14.3 A/F at 2131 RPM (cO2 13.3) Poor Fuel Mileage 9-10 MPG City 14-15 MPG Highway(City is Bad) 18/19 Inch Vacuum-That pulses byhalf point (Not Steady) Faintly rough idle(small,Not smooth) Plugs are Bosch(Autolite) APP 26 (Double Platinum) Replaced Autolite 26 Can anyone tell me what to check All reply are welcome and will be responded to I need max fuel mileage First picture is plug 1 and plug 5 Second picture is the 8 plugs I removed about 6,000 miles ago 
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08-11-2005, 09:10 PM
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bad..that looks good to me for a old full size truck
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08-11-2005, 09:13 PM
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Need better mileage
Reg Unlead is 2.49 today(cheapest place)
is going up next week
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08-14-2005, 07:44 PM
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fuel mileage, ?????
try an MSD box, and keep your fingers crossed for 16.
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08-14-2005, 07:48 PM
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I did a tune up....plugs, wires, set timing a bit more than recommended (doesn't ping)...........in my 77 Dodge van with a 360 and went from 12 to 15 on the highway...................Around town, it's going to suck the gas anyways.
__________________
Ontario Rodders
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08-14-2005, 07:50 PM
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BTW...gas here today was $1.02 /litre................thats $4 per American gallon.
__________________
Ontario Rodders
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08-14-2005, 07:50 PM
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Quote:
I hear that............
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08-14-2005, 07:54 PM
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These gas prices are something else! I never thought that I would see hot rodders concerned with gas mileage. Its always been more horsepower, LOL. What gripes me is $ 13 to fill up the gas can for the friggin lawnmower!
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08-14-2005, 07:54 PM
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were all screwed . gas is gonna go higher.
Last edited by spinn; 08-15-2005 at 08:09 AM.
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08-14-2005, 07:55 PM
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maybe i am not so bad. $US 4 bucks
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08-14-2005, 07:55 PM
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08-14-2005, 07:56 PM
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08-14-2005, 07:59 PM
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At least I can get a good laugh
No one complains about fuel but me. people are still riding around in circles Maybe I should put a holley double pumper 750 on it then i will have something to complain about............. 
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08-14-2005, 08:03 PM
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08-14-2005, 08:12 PM
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