Why 6.0s are so thirsty?
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Joined: Jun 2016
Posts: 22,298
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From: Central Cal.
To me, anyone willing to do the work of changing out a cam is shorting themselves by not getting the best cam possible (AKA sufficient lift to do the job RIGHT) and springing it to match. Just my .02...
Originally Posted by CAMMOTION PERF
The main difference between the two cams is valve timing. While the duration and lobe separation angle are similar, the Cam Motion truck cam has more advance. This makes a very big difference in torque off idle and power below 5000 RPM. This will make all the difference in the world in a heavy truck, especially if used for towing or carrying loads. With that said, you could advance the LS1 camshaft and get a very similar result to the low-lift "drop-in" version.
We also offer a "high-lift" version with .550" lift. So, there is the "drop-in" version truck cam for guys who don't want to change valve springs from factory and we have the "high-lift" version truck cams for use with our performance replacement beehive valve springs.
http://www.cammotion.com/camshafts/t...204-212-116-4/
We also offer a "high-lift" version with .550" lift. So, there is the "drop-in" version truck cam for guys who don't want to change valve springs from factory and we have the "high-lift" version truck cams for use with our performance replacement beehive valve springs.
http://www.cammotion.com/camshafts/t...204-212-116-4/
As far as the 6.0, I've been wanting to see if anyone has tried switching to 93 octane and throwing lots of timing at it.
First thing I did when I got my truck (5.3) and it gained a solid 2-3 mpg. Now my miles per dollars is equal to running 87 and the truck is 10 times more fun.
Now some people report 12-13 mpg with the 6.0 one or two folks say 18
I have regularly gotten both with my truck, all things equal, except how I drove it. I've gotten as bad as 11 over a tank full of **** MPG i'm having fun to 25 mpg over 27 miles of flat highway with a low wind day at 60-64 mph.
The fuel mileage is super susceptible to variables. Most don't baby a 6.0 truck because it's either a performance package truck or a work truck.
I agree strongly with the comment that the 6.0 may just not be very efficient due to it's intended design. Power and MPG are highly linked to efficiency. That's why a well planned overall package good combo out performs a slapped together combo always.
First thing I did when I got my truck (5.3) and it gained a solid 2-3 mpg. Now my miles per dollars is equal to running 87 and the truck is 10 times more fun.
Now some people report 12-13 mpg with the 6.0 one or two folks say 18
I have regularly gotten both with my truck, all things equal, except how I drove it. I've gotten as bad as 11 over a tank full of **** MPG i'm having fun to 25 mpg over 27 miles of flat highway with a low wind day at 60-64 mph.
The fuel mileage is super susceptible to variables. Most don't baby a 6.0 truck because it's either a performance package truck or a work truck.
I agree strongly with the comment that the 6.0 may just not be very efficient due to it's intended design. Power and MPG are highly linked to efficiency. That's why a well planned overall package good combo out performs a slapped together combo always.
Last edited by 00pooterSS; Nov 6, 2017 at 03:28 PM.
^^^^^^^I had my 5.3 "premium fuel tuned". It felt good but didn't do a godam thing for mileage. Now I have to run super in something that went a couple hundred thousand miles on regular. I was robbed.
Sam (AMP) street tuned mine and monitored MY truck for knock and took it at as high as it could safely go. No mail order/base/ripoff tune here.
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Verdad Gallardo No, Mythbusters tested it proved it wrong. http://www.discovery.com/tv-shows/my...l-consumption/
The nets didn't help etc. I think they even found it was better with the tailgate up.
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Joined: Apr 2017
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IDK if anyone answered your ? Tuskey but here's the Real answer brother. Too much to read about MPG.
If no 1 has said this then shame on you guy's. It's 1st off a HEAVY *** truck. What does this do 1st to mpg. Next the gearing in any decent sized truck is what like 4.10. Added it's a bigger bore size which is needed for More TQ that's needed for logging things around. Gearing and weight is what can or will help a 6.0.
Young man said he seen a 4mpg difference with a 5.3 vs 6.0 that's fair. Place a 6.0 in a S10 with 3.42 or 3.08's and a OD trans what would be the MPG? It's all based on the driver's Foot and driving conditions .....hills,windy,flat etc...
I've done a Ton of driving and MPG changes ALL the time. Mess with any newer style car with MPG on a long trip and it will go from reading 22mpg to 15mpg on Cruise control depending on outdoor conditions.
If no 1 has said this then shame on you guy's. It's 1st off a HEAVY *** truck. What does this do 1st to mpg. Next the gearing in any decent sized truck is what like 4.10. Added it's a bigger bore size which is needed for More TQ that's needed for logging things around. Gearing and weight is what can or will help a 6.0.
Young man said he seen a 4mpg difference with a 5.3 vs 6.0 that's fair. Place a 6.0 in a S10 with 3.42 or 3.08's and a OD trans what would be the MPG? It's all based on the driver's Foot and driving conditions .....hills,windy,flat etc...
I've done a Ton of driving and MPG changes ALL the time. Mess with any newer style car with MPG on a long trip and it will go from reading 22mpg to 15mpg on Cruise control depending on outdoor conditions.
Last edited by Patron; Nov 7, 2017 at 09:29 AM.
IDK if anyone answered your ? Tuskey but here's the Real answer brother. Too much to read about MPG.
If no 1 has said this then shame on you guy's. It's 1st off a HEAVY *** truck. What does this do 1st to mpg. Next the gearing in any decent sized truck is what like 4.10. Added it's a bigger bore size which is needed for More TQ that's needed for logging things around. Gearing and weight is what can or will help a 6.0.
Young man said he seen a 4mpg difference with a 5.3 vs 6.0 that's fair. Place a 6.0 in a S10 with 3.42 or 3.08's and a OD trans what would be the MPG? It's all based on the driver's Foot and driving conditions .....hills,windy,flat etc...
I've done a Ton of driving and MPG changes ALL the time. Mess with any newer style car with MPG on a long trip and it will go from reading 22mpg to 15mpg on Cruise control depending on outdoor conditions.
If no 1 has said this then shame on you guy's. It's 1st off a HEAVY *** truck. What does this do 1st to mpg. Next the gearing in any decent sized truck is what like 4.10. Added it's a bigger bore size which is needed for More TQ that's needed for logging things around. Gearing and weight is what can or will help a 6.0.
Young man said he seen a 4mpg difference with a 5.3 vs 6.0 that's fair. Place a 6.0 in a S10 with 3.42 or 3.08's and a OD trans what would be the MPG? It's all based on the driver's Foot and driving conditions .....hills,windy,flat etc...
I've done a Ton of driving and MPG changes ALL the time. Mess with any newer style car with MPG on a long trip and it will go from reading 22mpg to 15mpg on Cruise control depending on outdoor conditions.
All that's been mentioned MANY times. I didn't read all this thread by far, I read very little of the thread and saw it mentioned several times. Hell some of it's mentioned on this very page.
But I and many others such as you too, mentioned that the trucks that the 6.0 is usually in is not a good truck to use for comparison.
I'd like someone to chime in that has a SS or VHO that drives it for MPG. The LQ9 is higher compression and going to be more efficient. It's also a half ton.
I have 3.73 gears factory in my truck same as the above trucks and I'd like to compare mine to theirs. I have a weird truck called a spring special that has the torsion bar suspension even though it's 2wd, dual piston rear brakes, full options etc etc same as the SS truck but has a 5.3 so it would be a perfect apples to apples comparison against a ss or vho 2wd since they are the exact same outside the engine
I have one benefit though, mine is electric fan. That could be part of my MPG gain that I got during tuning. Forgot to mention that earlier and it's possible that's part of my solid 2 mpg (3?) I got after my 93 octane tune
The airflow difference is pretty crazy when the throttle opens. You can watch how the fuel curve goes up just taking off from a stop sign. I think feeding the beast with air would help quite a bit on that end. Its drinking through the same straw the 4.8 and 5.3 are. It cant be too happy.
Plus they didnt make a 6.0 with 317s that had an nnbs/90mm tb on it as far as i know.
Plus they didnt make a 6.0 with 317s that had an nnbs/90mm tb on it as far as i know.
The airflow difference is pretty crazy when the throttle opens. You can watch how the fuel curve goes up just taking off from a stop sign. I think feeding the beast with air would help quite a bit on that end. Its drinking through the same straw the 4.8 and 5.3 are. It cant be too happy.
Plus they didnt make a 6.0 with 317s that had an nnbs/90mm tb on it as far as i know.
Plus they didnt make a 6.0 with 317s that had an nnbs/90mm tb on it as far as i know.
I assumed, but never pay attention, that the gen 4 6.0 used the later intake and 90mm (87)
Last edited by 00pooterSS; Nov 7, 2017 at 11:35 AM.
Gen4 6.0s were all rec port.
I have personally seen gains from the Spectre cai. I have em on all 3 of my trucks.
They are same design as afe and kn but cheaper.. Made in California. Good guys with great products.
I have personally seen gains from the Spectre cai. I have em on all 3 of my trucks.
They are same design as afe and kn but cheaper.. Made in California. Good guys with great products.
The new trucks (hd) have a 6.0 and I was wondering what they are like. Buddy said he saw one that's direct port, I think he's wrong, I cant find anything saying there is direct port on anything but gen 5
And I've been considering the speed engineering intake and headers for my NBS (for mpg and the bump in power). They have an intake that looks just like the K&N etc spectre for $69 IIRC
Gm didnt make a gen4 lq4 or lq9. They have the ls2 but thats not an iron truck block. No gen4 with 317s.
The 6.0 gen4 trucks all use l92 heads. 821 castings iirc. tbss used ls2 so not applicable really. You can try to compare them but there is a bit of difference. Cam, computer, intake, tb, cyl heads, block.
Making a correlation between them isnt apples to apples.
The 6.0 gen4 trucks all use l92 heads. 821 castings iirc. tbss used ls2 so not applicable really. You can try to compare them but there is a bit of difference. Cam, computer, intake, tb, cyl heads, block.
Making a correlation between them isnt apples to apples.
Also l78 and l79 and l98 and a few other iterations.
Dont quote me on this, but i think gm didnt use flex fuel on lq4 or lq9 either. I may be wrong though, but that is splitting hairs on the fleas that are on the dogs.
Dont quote me on this, but i think gm didnt use flex fuel on lq4 or lq9 either. I may be wrong though, but that is splitting hairs on the fleas that are on the dogs.