What is your point. I covered that in my post. Diesel get more mpg but not enough to make up the initial costs and repairs. And like i said Diesel will pull it faster but not buy a huge margin. Its personal preference!! but dont rag on a gas engine because of RPM when that is what they are designed to do. Another point- Yes the 1500 engines are as strong or stronger than the 6.0l. But They will not live at those rpms while fully loaded for the same time as an HD truck. Not tested or designed to do so Also not setup with the cooling reguired for sustained Load.
For those that keep saying that a 6.0 has to be at 4500rpm to pull the hills!! YES THEY DO. ITS a gas engine with a peak torque output at 4500 rpm and Peak HP output at 5200-5500 rpm. This is the way small block gas engines get shit done!! Its not a diesel with a RPM limit of 3000 with peak torque at 15-1800, I've owned 350 ci and 6.0 litres for years and Now a 2016 l96 variant. Gas mileage while towing?? Not gunna happen. However its not that bad considering the price of 87 octane vs Diesel!. I tow a 6500 lb travel trailer with the box fully loaded with Dirt bikes, Generator, 12ft alum boat. Extra gas gear wife Kid and 2 dogs. It will pull the Coquihalla in B.C one of the steepest longest pulls around. I crest the summit at 55mph foot 3/4 down and 4500-5000rpm. Trans temp barely moves in 35c middle of summer. Would a diesel do it quicker? Yes but not buy much. and you can watch the trans and exhaust gas temps start to climb if its got a decent load. Dont try this with any 1500 either as the payload wont cut it especially with the trailer connected along with the fact the trans and diffs are not meant for sustained RPM and loaded towing. Sorry bit of a rant. Diesel= More torque slightly better fuel mileage. Worth the extra cost??? Not unless you use it daily and tow over 9000lbs plus cargo as far as i am concerned. Gas = Less initial $$ Less fuel $$ Less maintenance $$ Gets warmer faster in winter , fuel doesnt gel until colder temps. Much easier to work on in your driveway, Pending you actually have to. Wont get there as fast but will still get there in time for the First beer!
Will it actually be available in an HD truck though?? Medium duty and bigger yes but lets hope they make it as a second gas option for the everyday HD truck owner. Along with the 100% torque available in 1st gear and up just like the 2020 Diesel.
Direct injection. 10.8.1 compression ratio. Variable cam timing. Cast iron block, forged steel crank. hypereutectic pistons. Very minor over bore compared to the 6.0 and a bit more stroke. Simple and effective upgrade. Only the 6 speed though.
Did i say that there tuning was perfect? No. Does there trans tuning and engine tuning need some tweaking? Yep. However i keep hearing you say that these ecms are not tunable? Hmm Not much aftermarket support? Well if you know how to tune? There is actually a lot of potential yes. However as you stated These trucks are designed to do WOT up Steep hills while fully loaded? How much of that do your trucks see while in Alberta? Ive tuned many 6.0l for better mpg and HP along with a much improved trans life but if you dont watch the timing and knock while towing and setting the tune. You will have issues. However if you wish to keep your warranty intact?? Your kinda stuck with the stock tuning for a few years. The New 6.6 with 3.73 gears is not going to be much better overall than the current truck with the l96. But it is an improvement. What i dont understand is why what seem to be loyal GM fans continue to bash there own equipment?? Every brand needs tweaking!! however what brand has the least amount of trans and engine problems??
The stock tuning is set up for the guy at max gcwr with foot to the wood full of cheap 87 going up the side of a mountain. Edited 6 hours ago by SierraHD17 Um Yep That is what these trucks are designed to do!! Not be hotrods like the 1500's. Yes they are decapitated a bit from the factory. However would you like to be GM and have to pay for extensive warranty issues if they were tuned to run at max Hp without a consideration for breakage? I hope the new 6.6 is as strong and reliable as the l96. However put the 4.11 back!
Possibly. And yes you can get over 15 with a 6.0l I even did it regularly with my 2001HD with 4 speed. . However the extra 2mpg while unloaded and cruising still doesnt get you to the top of the hill faster than the old out dated under powered 6.0l LOL
So you have no first hand experaince!! And youll believe what guys driving the competition are going to say? LOL. Yes all HD gas engines get bad mileage! Continue to drive your 1500 like i said. And while towing none of these trucks. Ford / Dodge /Or Gm get better than 8 or 9 mpg. And sorry but never heard of any Dodge or ford getting 18-20mpg. Maybe if you drive the absolute speed limit with zero weight in the truck and in a Completely Flat Province or state. Otherwise not gunna happen. OH wait. and they still cant pull the same load up the same hill any faster!
Its funny all the bashing of the 6.0!! This engine has to be the most reliable HD gas engine in the market. It out pulled and out performed its competition with less Power. On paper at least. Gets just as good of mileage as any other HD gas engine. Now lets bash its replacement before we have even get to drive one?? Some more power, Probably a little better mileage and it will still be the Most reliable engine in its class!! Will Ford put out more power?? Well they sure as F should with a 7.3litres. And if they dont get over 500ftlbs they are going to be laughed at. Fuel mileage?? Not likely!! Will it outlast a 6.6?? Time will tell. Will it outpull one? Yet to be determined? Does a gas engine need a 10speed? Not really to much shifting. People say fleets dont buy the 6.0 gas engine because of Fuel Mileage?? LMAO. Look at how many are in Delivery trucks/vans/ busses/ etc etc etc. Heavy Duty trucks are not built to get fuel mileage. At least not yet. The gas engines are meant to last at WOT all day long. Should GM have made some more Power with the 6.6? Yes i think so. But its a good revision for little $$ and has potential for more in the future. If you want a 7000lb truck to get good mileage? You are in the wrong market/. And Sorry but Diesels dont get great mileage either for the money they cost.
The new Not so New engine. Its a 6.0l based block with .25 inch more stroke. Direct injection with variable cam timing and more compression. Pretty simply change from the old l96. Added direct injection in order to get away with the higher compression and a bit cleaner emissions. .25 inch increase in stoke to get a little more torque. Id like to see the cam specs? So if i do a cam swap on my 2016 l96 with around .525 lift and 220ish duration along with a good set of long tubes and the tune to match. I will have more power and at least the same amount of torque.. Was hoping to see 440 450hp and 460+ ftlbs But its a basic safe and reliable refresh that will last in the commercial side of the market. My guess is that the 7.3 from ford will be around 460-500ftbls. And low to mid 400 for hp. Just my 2css
what year and model is your truck? Your description says LTZ z71 6.2. That would be a 1500 truck and could be different than my 16 HD ? I dont remember it being an 8 pin plug. Only 4 or six. A test light will get it figured out in less than 5 mins. Do you not have the correct harness? Or? Sorry its been a while since i looked at it.
if you look up into the junction block while laying on your back under the truck. cant remember if i had to remove the spare tire? dont think so. There is only 3 pins. One is switched power from the cab. one is ground and the other if i remember correctly was linked to the brake lights for some reason. should be easy to figure out as they were opposite corners etc .
If you can fire up your carbed vehicles in the middle of winter or anything under 10deg. and it will idle and drive away cleanly in under a minute. Your idle circuit is way to rich.. And you are using to much fuel under normal operating conditions. To rich at idle. A correctly tuned carb will run perfectly with a good choke setting and correct jetting under all situation. Only reason to not use a choke is not knowing how to set one up. Or a race engine that doesnt require it. Not picking on anyone. But a well tuned carb will run almost as good as Efi. Even in the cold.
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