PDA

View Full Version : 2004 Chevy 4x4 5L, better gas milage?


godtool
02-26-2008, 07:32 AM
Buddy of mine has a 2004 Chevy 4x4 with a 5 Liter. Can he chip it for better gas milage? He was also told to run some top-of-the-line spark plugs and gap them 5 thou more than stock. His truck has 80,000 K on it and he has yet to check his plugs. I though you should change plugs every 30,000 K but he thinks its every 160,000K.:confused:

Anyone here know of a good shop he could take it to up here or down at the coast to have it improved?

Some of us up here in the northwest take out our cats to open up the exhaust for better flow but then you need to fool the O2 sensers but do people still do that today, say on a 2004 Chev?

Trooper
02-26-2008, 06:32 PM
Turbo charge it if your looking for fuel economy. Problem is your spend more money doing it then you will ever save on fuel. BEST way to save fuel it put a block under the skinny pedal. Buddy of mine has a 2006 5.3l and he gets about 13L per 100km on the highway and 16 or so in town. Thats better then the chevy duramax

kootenaycat
02-26-2008, 11:39 PM
Buddy of mine has a 2004 Chevy 4x4 with a 5 Liter. Can he chip it for better gas milage? He was also told to run some top-of-the-line spark plugs and gap them 5 thou more than stock. His truck has 80,000 K on it and he has yet to check his plugs. I though you should change plugs every 30,000 K but he thinks its every 160,000K.:confused:

Anyone here know of a good shop he could take it to up here or down at the coast to have it improved?

Some of us up here in the northwest take out our cats to open up the exhaust for better flow but then you need to fool the O2 sensers but do people still do that today, say on a 2004 Chev?

Didn't know Chevy had the 5 litre in '04? 4.8 and 5.3L. What's he getting for MPG? Most people go by the "I used to be able to drive to such and such on a tank, but now I can't". Not really accurate, so get him to run a few tanks, record kms and litres and see what it gets. I've seen many sending units start to go, not accurate, and now people are filling up at empty and it's still actually got almost 1/8 or 1/4 tank left. Happened on our Subaru and a few others when I worked at a dealer.

On an older EFI truck, when the O2 sensors get "lazy" it will start to burn more fuel, good idea to change them at around 100,000km along with a tuneup.

Growly Gorilla
02-27-2008, 08:23 AM
tell him to buy a car if he wants fuel economy. It'll have a 5.3 in it and it's the best engine in the trucks for power and fuel economy.Use A/C delco plugs,the newer gm's don't like anything else,and I wouldn't go more than 120k on platinum plugs.

HEAVY METAL
02-27-2008, 08:27 AM
tell him to buy a car if he wants fuel economy. It'll have a 5.3 in it and it's the best engine in the trucks for power and fuel economy.Use A/C delco plugs,the newer gm's don't like anything else,and I wouldn't go more than 120k on platinum plugs.


i laugh at the idiots who buy a truck than cry about gas mileage...wouldnt this be somehting you ythink of BEFORE buying a truck?

nightcrawler
02-27-2008, 09:59 AM
:fighting0080: open up the air flow (high flow filter exhuast yadayada):D

230
02-27-2008, 03:39 PM
i laugh at the idiots who buy a truck than cry about gas mileage...wouldnt this be somehting you ythink of BEFORE buying a truck?


I agree whole heartedly with ya Dean.

I did a lot of research when i bought mine and it gets better mileage than a lot of small trucks.I get 22 MPG out of my 5.2 dodge.

godtool
02-28-2008, 07:49 AM
Thanks for all the info. I also agree that if you buy a truck nowadays you also are not worrying about the price of fuel. My buddy does not know much about mechanics so yes he most likely has a 5.3 L.

godtool
02-28-2008, 07:52 AM
open up the air flow (high flow filter exhuast yadayada)

Are you mixed up? What does high flow "filter" exhaust mean? Do you mean high flow air filter?

bakelite
02-28-2008, 09:08 AM
High flow air filter and high flow exhaust.

nightcrawler
02-28-2008, 10:13 AM
thanks bakelite

230
02-28-2008, 10:54 AM
High flow air filter and high flow exhaust.


But you need to do the math,$1000 of mods to save $10 a month in gas...

Growly Gorilla
02-29-2008, 08:39 AM
I agree,not making a bunch of sense.But the high flow exhaust will make it sound cool.drama

521 Ford
02-29-2008, 03:51 PM
How about some maintenance? I aree with Growly put the right plugs in it. Changed a fuel filter lately? Throttle body clean? Tire pressure right? How much stuff do you carry around in the truck all the time? Don't bother with the air filter stuff unless you can find one that doesn't use oil to filter. K&N only works on carbs, once your maf gets oily you lose performance. That family of engines has been really good, 4.8,5.3,6.0 hardly any problems. You could also try turning it off on downhills and at street lights! (thats what the first gen hybrids do anyway - no reason it wouldn't work on a regular truck!)
I like the block under the pedal idea too.