ways to help mpg - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ocbaud · 11-17-2002, 01:45 PM

okay, i seriously need to get my mpg up. i dont have a label thing to set my timing so i have to do that by ear. i also know nothing about tuning carbs either

Txstruck · 11-17-2002, 01:47 PM

Keep your foot out of it!

Seriously, I dont know much about carbs being that I dont even have one. DIESELS RULE!!

*Piston* · 11-17-2002, 02:06 PM

Stay off I-40 (It shakes the fuel out of the tank!!!!) lol

-Timing is a key factor but driving habits are the most important.(Bone stock would have been 8 degree's) Constant in/out of the gas ruins MPG.
-Of course engine health is a big part too, how do the plugs look? Color I mean... nice shade of tan? anything more and your hurting MPG.
-EGR operation. The Spring gets weak in the EGR and cause it to open too early.
- Choke adjustment. coming up on winter time, make sure your choke is releasing as soon as possible. It can account for more than 2 gallons or more per week if the pull-off is bad or the choke thermostat engages too long.
-Tire pressure - higher pressure = less rolling resistance/terrible ride
-engine oil viscousity too high will cause poor mileage

I know there's more im not thinking about, anyone else?
I'll be down there in 2 weeks, if you need help let me know.
We've got family in Moore and Edmond and will be there over thanksgiving.

ocbaud · 11-17-2002, 02:15 PM

i got no egr

i installed a block off plate for it. and i probably should change my plugs and wires, because i dont even remember the last time i did.

78SilveradoSWB · 11-18-2002, 12:18 AM

Add a soft or hard tonneau cover or just remove the tailgate and install a net to improve the aerodynamics of the truck.

ocbaud · 11-18-2002, 12:37 AM

Quote:

Originally posted by 78SilveradoSWB
Add a soft or hard tonneau cover or just remove the tailgate and install a net to improve the aerodynamics of the truck.

removing the tailgate would make things worse, or so i've heard

78SilveradoSWB · 11-18-2002, 01:12 AM

Things loaded inside the bed would fall out

Open pickup beds tend to add to the drag coefficient and thats why tonneau covers hard or soft and air dynamic shaped canopy aids in the drag coefficient which will improve mpg. Removing the tailgate helps in letting the air flow through reducing the air resistance. The more resistance on the object the more energy required to pass through it. Its the law of physics.

Hooter · 11-18-2002, 01:14 AM

Ah these truck have the aerodynamics of a barn door anyways. Don't stand on it, get dual exhaust and headers, make sure you have a good air filter, good tires and non of your brakes are sticking. Remove excess weight a.k.a wife

78SilveradoSWB · 11-18-2002, 01:17 AM

Hooter:

He's got everything except the wife, but he has a girl friend

gchemist · 11-18-2002, 10:44 PM

Drive behind a semi all the time.

ocbaud · 11-18-2002, 10:51 PM

i advanced my timing some more, and it seems like it is running like it was before we messed with it the first time, which means less power, and more mpg

littlebubba · 11-20-2002, 02:44 AM

Whats the condition of your carburater? Might need a rebuild? Running too rich. Have you played with the wieghts and springs in the distributor? Give that a try. Use a vacuum gage to setup your carb. Alot of factors effect mileage. Tire size, rear gears, cam, intake, etc.

11-17-2002, 01:45 PM	#1
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	ways to help mpg okay, i seriously need to get my mpg up. i dont have a label thing to set my timing so i have to do that by ear. i also know nothing about tuning carbs either

11-17-2002, 01:47 PM	#2
Txstruck Registered User Join Date: Nov 2002 Location: Dallas Posts: 459	Keep your foot out of it! Seriously, I dont know much about carbs being that I dont even have one. DIESELS RULE!! __________________ Steve 86 K30 4x4 6.2L Diesel\TH400\NP208 - 14bolt FF rear w/detroit locker and Dana60 front w/detroit locker- both with 4.56 gears "Runs on Mud"

11-17-2002, 02:06 PM	#3
Piston Account Suspended Join Date: Oct 2002 Location: Olathe, KS Posts: 2,300	Stay off I-40 (It shakes the fuel out of the tank!!!!) lol -Timing is a key factor but driving habits are the most important.(Bone stock would have been 8 degree's) Constant in/out of the gas ruins MPG. -Of course engine health is a big part too, how do the plugs look? Color I mean... nice shade of tan? anything more and your hurting MPG. -EGR operation. The Spring gets weak in the EGR and cause it to open too early. - Choke adjustment. coming up on winter time, make sure your choke is releasing as soon as possible. It can account for more than 2 gallons or more per week if the pull-off is bad or the choke thermostat engages too long. -Tire pressure - higher pressure = less rolling resistance/terrible ride -engine oil viscousity too high will cause poor mileage I know there's more im not thinking about, anyone else? I'll be down there in 2 weeks, if you need help let me know. We've got family in Moore and Edmond and will be there over thanksgiving. Last edited by Piston; 11-17-2002 at 02:09 PM.

11-18-2002, 01:14 AM	#8
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	Ah these truck have the aerodynamics of a barn door anyways. Don't stand on it, get dual exhaust and headers, make sure you have a good air filter, good tires and non of your brakes are sticking. Remove excess weight a.k.a wife __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

11-18-2002, 10:44 PM	#10
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Drive behind a semi all the time. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

11-17-2002, 02:15 PM	#4
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	i got no egr i installed a block off plate for it. and i probably should change my plugs and wires, because i dont even remember the last time i did.

11-18-2002, 12:18 AM	#5
78SilveradoSWB Senior Member Join Date: Apr 2002 Location: Beaverton, OR Posts: 1,615	Add a soft or hard tonneau cover or just remove the tailgate and install a net to improve the aerodynamics of the truck.

11-18-2002, 01:12 AM	#7
78SilveradoSWB Senior Member Join Date: Apr 2002 Location: Beaverton, OR Posts: 1,615	Things loaded inside the bed would fall out Open pickup beds tend to add to the drag coefficient and thats why tonneau covers hard or soft and air dynamic shaped canopy aids in the drag coefficient which will improve mpg. Removing the tailgate helps in letting the air flow through reducing the air resistance. The more resistance on the object the more energy required to pass through it. Its the law of physics.

11-18-2002, 01:17 AM	#9
78SilveradoSWB Senior Member Join Date: Apr 2002 Location: Beaverton, OR Posts: 1,615	Hooter: He's got everything except the wife, but he has a girl friend

11-18-2002, 10:51 PM	#11
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	i advanced my timing some more, and it seems like it is running like it was before we messed with it the first time, which means less power, and more mpg

11-20-2002, 02:44 AM	#12
littlebubba Registered User Join Date: Jun 2002 Location: Clinton Twp., Michigan Posts: 321	Carb adjustment Whats the condition of your carburater? Might need a rebuild? Running too rich. Have you played with the wieghts and springs in the distributor? Give that a try. Use a vacuum gage to setup your carb. Alot of factors effect mileage. Tire size, rear gears, cam, intake, etc.

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