New Super Duty and Chevy HD Gas Engines ?

[67L48]

Originally Posted by koller1509

It's not a V-8, it still the same 3.5 V-6 just tuned hotter!

Huh. You're right. I was still thinking it was the supercharged 6.2L. So much for my clever little joke.

[67L48]

Originally Posted by B and B

I agree and because GM who took Government Loans and NEVER repaid them in Ontario are now closing the Oshawa plant throwing 10,000 out of work. I will never buy a GM product again. They have huge sales on Bow Tie up here as no one is buying them at all. Soon Ram will be assembled in Detroit so they are contender again but Ford SD is it for me. 7.3 L engine that is huge and for builders of street rods they will be First On Race Day!!!

Sweet. I was afraid this wouldn't turn political. Well played!

[kluza2786]

I would expect to see about a 10+% increase in horsepower and torque with the 6.6l vs. the 6.0. However, probably like the GM 6.2 it will require premium gas, unlike the 6.0 that does fine with standard fuel.

[Mr. Dan]

Originally Posted by kluza2786

I would expect to see about a 10+% increase in horsepower and torque with the 6.6l vs. the 6.0. However, probably like the GM 6.2 it will require premium gas, unlike the 6.0 that does fine with standard fuel.

From what I've seen, it with produce 401 hp and will run on 87 octane gasoline.


Here's where I got the HP number: https://www.tfltruck.com/2019/02/202...hd-full-specs/.

[BigH]

Originally Posted by kluza2786

I would expect to see about a 10+% increase in horsepower and torque with the 6.6l vs. the 6.0. However, probably like the GM 6.2 it will require premium gas, unlike the 6.0 that does fine with standard fuel.

Thankfully the 6.2 had no chance of moving up to HD status and thankfully the new 6.6 motor makes its 401hp/464lb-ft on 87 pump gas.

So, about 10% hp and 20% torque...

I'm also glad they stayed with the 6l90 for the gas truck and not some 8/9/10 speed...(I'd have taken the 6 speed Allison though)

I love all this new truck stuff...can't wait to the see the numbers on the big block from Ford (maybe they will fix the cold weather door issues on the aluminum trucks ) and Ram hopefully fixed their Achille's heal with the new slushbox but the slacker on paper 6.0 gets it done well for me and the proven history of reliably working hard will take many years to replace.

Good times.

[Mr. Dan]

From https://www.gmc.com/gmc-life/trucks/...EsiKGY-1LmRe1M....



"Sierra Heavy Duty’s powertrain innovations also extend to its gasoline engine offerings. An all-new 6.6L gasoline V8 engine joins the lineup, and is the only gasoline direct-injected V8 engine in the heavy duty pickup segment (excluding other GM vehicles). Offering 401 hp and 464 lb-ft of torque, this engine provides an 11 percent increase in horsepower and 22 percent increase in peak torque compared to the previous 6.0L gas engine. The 6.6L gasoline V8 is paired with the 6L90 six-speed automatic transmission."

[JeffandLori]

As for the Ford 7.3l, I could be wrong, and what I've seen it looks like they are really building this thing for the long haul, so maybe they will push the output as well, but I'll be shocked if we see more than 450-475 HP and 475-500 TQ.

If you compare all of the current V8 offering and their HP/L or TQ/L, you find the 5.0l Ford to be the outlier at 79 and 80 respectively. However, that drops dramatically when going to the 6.2l to 62 and 65.

Dodge is 69/72 for the 5.7l and 64/67 for the 6.4l.

GM is 67/72 for the 5.3 and 60/63 for the 6.0l. It does make a jump back up for the 6.2 (that you can't get in HD) to 68/74.

What does this tell us? No surprise, but the bigger you get, the harder it is to make more power. The curve is certainly not linear and flattens out. With the notable exception of going from the 5.L GM to the 6.2L GM. There it actually picked up a bit of per/liter power.

If the 7.3l can match the 5.0l then it will be amazing at 576 HP and 584 Ft/Lb. I doubt that is realistic.

If it can at least match the current per liter output of the Ford 6.2, then it will be 453/476 respectively. That sounds more reasonable.

Based on what little I've seen, it looks like they are engineering for torque, so my guess is it will be in that range.

However, if they end up at ~500hp and ~600ft/lb of tq.....they'll have me. But I also think numbers that high will cannibalize diesel sales. I'll be surprised if tq passes 500.

So, there's my prediction - 450HP/475TQ.

[koller1509]

Originally Posted by 67L48

Huh. You're right. I was still thinking it was the supercharged 6.2L. So much for my clever little joke.

From what I am hearing, guys don't want a motor that sounds like a vacuum cleaner so Ford will be going back to the V8 with 7.3 in the Raptor!

[BigH]

Originally Posted by JeffandLori

As for the Ford 7.3l, I could be wrong, and what I've seen it looks like they are really building this thing for the long haul, ...

So, there's my prediction - 450HP/475TQ.

I'm excited for this motor and I think your prediction on HP could be in line, but I'll guess they are going higher with the torque.

I don't know about the plastic oil pan being in line with building it for the long haul though...

[RET.LEO]

Still think I would wait a couple of years production to get the bugs worked out.......if any

[JeffandLori]

Originally Posted by BigH

I'm excited for this motor and I think your prediction on HP could be in line, but I'll guess they are going higher with the torque.

I don't know about the plastic oil pan being in line with building it for the long haul though...

Well, with the way they keep raising the 4x4s, unless you are in Moab, you might be hard pressed to hit it on something. lol.

Serious question though, other than impact damage- why wouldn't a properly engineered polymer be sufficient for an oil pan? I've seen polymers subjected to significantly higher impact, torsional and heat stresses than they ever will carrying some 200 degree oil and they hold up just fine.

[BigH]

Originally Posted by JeffandLori

Well, with the way they keep raising the 4x4s, unless you are in Moab, you might be hard pressed to hit it on something. lol.

Serious question though, other than impact damage- why wouldn't a properly engineered polymer be sufficient for an oil pan? I've seen polymers subjected to significantly higher impact, torsional and heat stresses than they ever will carrying some 200 degree oil and they hold up just fine.

I weld and machine various plastic compositions, even make some pretty nifty valve body piston assemblies for filling pharmaceuticals and I agree if its properly engineered...

I had a 2016 aluminum body that required a lawyer in order to have Ford remove it from my possession. In that time of ownership I would read up on the Ford forum and even posted some on the still ongoing door lock issue that they haven't resolved in five years...anyway, they switched the 150's to plastic pans and there was a rash of leakers. Maybe that issue is resolved now but I don't care for the plastic 120degree turn 'plug' for draining the oil either.
https://ssli.ebayimg.com/images/g/qe...c5I/s-l640.jpg

I'm a bit of luddite when it comes to some things...metal oil pans work...Ford used to have doors that locked and unlocked in winter too .

I'm not brand loyal to anything and I've had trucks from the big three and a Nissan in the last decade...the Ford left a bad taste in my mouth but when they build a great product I may be able to look at them again.

This bit of new gas motor stuff is exciting because when the hype clears in 5 years or so (when I may decide to replace mine if I want) there will be good info on how the product is performing.

[MR.M]

Originally Posted by Justice12t

I caught this today also. I would think so in both cases. The 6.0 has been great but was due for a refresh. The 6.2 is also great and is still the base with it's big brother now planted between it and the 6.7. I like that fact that Ford offers the choice of the 6.2 with the 6 or 10 speed and the 7.3 only with the 10. I'm interested to hear why GM kept the 6 speed with the new gas motor. Either way, I'm excited to see what the numbers compare to against each other and what the ike tests find out. I'm slightly concerned with GM's 52% increase in tow rating(TFL stated that) but hey it's about time. Pricing...well that will be something else.

Gm's new 6.6 with 6 speed . though it's still a 6 speed i believe i read all new tranny not a hold over . the 6.2 is a 1500 option engine which i wouldn't want . only hope the 6.6 is all iron block and proves to be the workhorse the 6.0 has been

[MR.M]

Originally Posted by kluza2786

I would expect to see about a 10+% increase in horsepower and torque with the 6.6l vs. the 6.0. However, probably like the GM 6.2 it will require premium gas, unlike the 6.0 that does fine with standard fuel.

I wouldn't count on the premium gas for the 6.6 . the 6.2 is a high compression ,aluminum block . If the new 6.6 is aluminum blocked i'll pass it by . hope they just increased the size by .6 liters direct fuel injection , will also help in the HP dept.
Well now that new news is out looks like it will suck premium since the compression will be increased dramatically . the numbers are nice though

[MR.M]

GM 6.6L L8T V-8 Engine Info, Power, Specs, Wiki | GM Authority

[BigH]

Originally Posted by MR.M

Gm's new 6.6 with 6 speed . though it's still a 6 speed i believe i read all new tranny not a hold over . the 6.2 is a 1500 option engine which i wouldn't want . only hope the 6.6 is all iron block and proves to be the workhorse the 6.0 has been

Originally Posted by MR.M

Gm's new 6.6 with 6 speed . though it's still a 6 speed i believe i read all new tranny not a hold over . the 6.2 is a 1500 option engine which i wouldn't want . only hope the 6.6 is all iron block and proves to be the workhorse the 6.0 has been

The new 6.6 is an iron block. The 6 speed transmission paired with it is still labeled 6L90 -same as in the current truck. I heard some talk of different clutch packs but a transmission 'expert' buddy of mine said there wasn't any room for more clutches so the 'talk' about more was referring to the last update in his opinion. It was also his opinion that the new motor output would not require any change to the 6L90.

His opinion sounds reasonable and I only shared it to fuel the conversation...I can't back anything up except GM is still calling it the 6L90.

Originally Posted by MR.M

I wouldn't count on the premium gas for the 6.6 . the 6.2 is a high compression ,aluminum block . If the new 6.6 is aluminum blocked i'll pass it by . hope they just increased the size by .6 liters direct fuel injection , will also help in the HP dept.
Well now that new news is out looks like it will suck premium since the compression will be increased dramatically . the numbers are nice though

The new motor makes it stated power on 87 gas.

[aceinspp]

Originally Posted by BigH

I weld and machine various plastic compositions, even make some pretty nifty valve body piston assemblies for filling pharmaceuticals and I agree if its properly engineered...

I had a 2016 aluminum body that required a lawyer in order to have Ford remove it from my possession. In that time of ownership I would read up on the Ford forum and even posted some on the still ongoing door lock issue that they haven't resolved in five years...anyway, they switched the 150's to plastic pans and there was a rash of leakers. Maybe that issue is resolved now but I don't care for the plastic 120degree turn 'plug' for draining the oil either.
https://ssli.ebayimg.com/images/g/qe...c5I/s-l640.jpg

I'm a bit of luddite when it comes to some things...metal oil pans work...Ford used to have doors that locked and unlocked in winter too .

I'm not brand loyal to anything and I've had trucks from the big three and a Nissan in the last decade...the Ford left a bad taste in my mouth but when they build a great product I may be able to look at them again.

This bit of new gas motor stuff is exciting because when the hype clears in 5 years or so (when I may decide to replace mine if I want) there will be good info on how the product is performing.

Ford suppose to be the best and no issues according to some. Later RJD