Why 6.0s are so thirsty?
My '02 Yukon with a 6.0 swap, Z06 cam, 3.73s, and 32" tires got 16-17mpg. Better than the 5.3 that came out of it. My L76 in my G8 got up to 25mpg with the DoD tuned to be more functional. Both of them made right at 375rwhp.
Hell, my 428 stroker in the G8 now will get 18mpg on the highway at a steady 80mph. I average around 12-13mpg in it mixed city/ highway.
A heavy *** 3/4 or 1-ton, especially 4WD isn't going to get **** for gas mileage, so matter what you do to it.
Hell, my 428 stroker in the G8 now will get 18mpg on the highway at a steady 80mph. I average around 12-13mpg in it mixed city/ highway.
A heavy *** 3/4 or 1-ton, especially 4WD isn't going to get **** for gas mileage, so matter what you do to it.
The Z cam isnt made for towing, hauling or being used in a heavy truck. If you had a cam with a powerband suited to the truck intake and shift points of ~5600 wot youd see a pick up in power. More lift less lsa.
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Well no one makes a PROVEN towing cam for LS motors. If they do I haven't seen one. Otherwise looking in jegs and summit racing you'll see cams specified for towing, 4x4s,hauling etc.....
TSP/BTR they have cams that are set up for towing.
The issue is people not stopping at "stg 2"
Above those normally you lose the low end grunt necessary and the power band goes above the reg rpm youd need it at.
The issue is people not stopping at "stg 2"
Above those normally you lose the low end grunt necessary and the power band goes above the reg rpm youd need it at.
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That's the LY6 motor. It has variable valve timing. It generated 361 horsepower at 5,600 rpm and 385 lb-ft of torque at 4,400 rpm using "regular" gas, or ~87 octane. Redline is 6,000 rpm and compression ratio is 9.6:1. This engine uses L92 / LS3 style rectangle port cylinder heads, though without the sodium filled exhaust valves of the LS3.
More power than high output LQ9.
More power than high output LQ9.
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If so I'll like to see a dyno graph. Remember when towing idle torque is what you need to get your camper/car/boat/bails of hay moving.
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https://ls1tech.com/forums/dynamomet...hp-22rwtq.html
Good thread here. I am heavily considering one of the Cam Motion drop in cams for my LQ4.
Good thread here. I am heavily considering one of the Cam Motion drop in cams for my LQ4.
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https://ls1tech.com/forums/dynamomet...hp-22rwtq.html
Good thread here. I am heavily considering one of the Cam Motion drop in cams for my LQ4.
Good thread here. I am heavily considering one of the Cam Motion drop in cams for my LQ4.
Results would be different in a LQ4 vs the 5.3 that was used in the thread. I remember Hot Rod Magazine bolted on a set of headers, mufflers and a tune. Those simple 3 mods put the 6.0 over 400 horse at crank.
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My '02 Yukon with a 6.0 swap, Z06 cam, 3.73s, and 32" tires got 16-17mpg. Better than the 5.3 that came out of it. My L76 in my G8 got up to 25mpg with the DoD tuned to be more functional. Both of them made right at 375rwhp.
Hell, my 428 stroker in the G8 now will get 18mpg on the highway at a steady 80mph. I average around 12-13mpg in it mixed city/ highway.
A heavy *** 3/4 or 1-ton, especially 4WD isn't going to get **** for gas mileage, so matter what you do to it.
Hell, my 428 stroker in the G8 now will get 18mpg on the highway at a steady 80mph. I average around 12-13mpg in it mixed city/ highway.
A heavy *** 3/4 or 1-ton, especially 4WD isn't going to get **** for gas mileage, so matter what you do to it.
I understand that. However, similar gains would be had with their 6.0 cams as well. I have spoken with Cam Motion and it was said that I would pick up noticeable off idle/midrange power with one of their cams.
For the best and most economical way to do it use the wide radiator, 05 1500 fans, nelson harness, turn tune on in comp. done. fits exactly like factory and gives the option of the oil cooler to those that dont have it. Make sure you have at least a 120 amp alt or better the 04 escalade is about 140-145 and fits perfect.
Ive done that to so many i cannot count both 99-04 and all 2500s and 3500s i can. Simple, easy, reliable, clean.
Ive done that to so many i cannot count both 99-04 and all 2500s and 3500s i can. Simple, easy, reliable, clean.
My radiator fits good, truck came from the factory with an oil cooler and big alternator with twin batteries. My metal fab buddy made some simple brackets to hold the f-body fans to the rad support, the setup almost looks factory.
Idle to 3,000 rpm is exactly where a factory 5.3 makes no power. When towing it is entirely gutless until about 2,800 rpm then it feels like a turbo kicked in. My 5.3 is a very poor truck engine. I have a rebuilt LS6 for it, also a poor choice but the price was right. At least I'll be adding displacement and shedding weight.
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Idle to 3,000 rpm is exactly where a factory 5.3 makes no power. When towing it is entirely gutless until about 2,800 rpm then it feels like a turbo kicked in. My 5.3 is a very poor truck engine. I have a rebuilt LS6 for it, also a poor choice but the price was right. At least I'll be adding displacement and shedding weight.
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I would love to see the results if you do so. I'm surprised Richard Holderner havent built/dynoed a 6.0 motor with a cam like you mention. Maybe I need to hit him up on Facebook.
Idle to 3,000 rpm is exactly where a factory 5.3 makes no power. When towing it is entirely gutless until about 2,800 rpm then it feels like a turbo kicked in. My 5.3 is a very poor truck engine. I have a rebuilt LS6 for it, also a poor choice but the price was right. At least I'll be adding displacement and shedding weight.
Back before I really understood these things.Yep. The 5.3 has no torque down low at all unlike some of the motors I already mentioned earlier in this thread. The only solution to fix that problem without removing the motor would be gears in the rearend and a tranmission with a strong first gear but then you'll be spinning the motor higher going down the highway as well. My dad is over 70 and told me back in his day the granny low tranmission was the hot ticket for guys looking to tow they camper etc...
I'd be very curious how that would do on gas vs the 4" bore, 3.6 stroke OE 6L. I'm sure it would be torquier, but a turd after 4500 RPM.
Also, out of curiosity - anyone think hydroboost adds a drain to the motor vs regular power steering?
I vaguely remember hearing about this nelson harness. Can you elaborate on what it is and where to get it?
My radiator fits good, truck came from the factory with an oil cooler and big alternator with twin batteries. My metal fab buddy made some simple brackets to hold the f-body fans to the rad support, the setup almost looks factory.
My radiator fits good, truck came from the factory with an oil cooler and big alternator with twin batteries. My metal fab buddy made some simple brackets to hold the f-body fans to the rad support, the setup almost looks factory.
The wide radiator not only cools better but opens up the inner core support holes for the stock truck fans to bolt to.