GM plan larger engine than 6.6 engine gas

[avalonandl]

On 4/27/2019 at 6:44 PM, pathetic said:

As was said above ... Chevy has done nothing for a decade, the interiors still suck, they are still playing catch up to dodge even ..

I drove a 2019 (NBS) 1500 and felt the interiors had taken a step BACKWARDS in quality/fit/finish.  Will keep my 2015 HD.

[C/K Man]

How did a thread about the upcoming commercial gas V-8 degenerate into sniveling about interiors?  Honestly, I think the interiors of the new GM trucks look a little boring, but the fit, finish, and quality of the materials seems to me to be as good as Ram and better than Ford.    

[Sierra Dan]

Try operating a RAM Mega-screen with work gloves or winter driving gloves. A truck is a truck for heaven sake.

At least the GM interiors are familiar territory and work.

Sure things could be fancier but it comes with a price and a reliability factor.

 

 

[L86 All Terrain]

Sounds like it is being developed for class 7 trucks only. Like deck trucks, roll off trucks, mechanical service trucks, and bread vans. This is not designed to compete with Ford's new 7.3L, but rather to compete with all the garbage diesel engines on the market that are plagued by diesel after-treatment system failures. Most modern diesel trucks with DEF can't go 2 months in Canadian winters without having some kind of issue. Whether the wiring harnesses burn themselves from the 1400 degree temps of the burner, injection nozzle failures, heated tank failures, frozen lines etc. Most of these diesel trucks can't even produce enough income to pay for their own payment, let alone insurance and repair bills. The manufactures know these systems suck, so they barely have a warranty on them, it only covers the components that don't fail, so we pay out of pocket on 2018 trucks. In fact companies like International offer an optional "Towing Package" where tow trucks are "free". Does that inspire confidence in your new $100,000 rig? 

 

This engine will allow Class 7 operators to go to work day in and day out without fear of being "De-Rated" on the side of the road and missing the next week of work. The increased fuel cost of running gas will easily pay itself off by not having the downtime and repair cost. 

[C/K Man]

You are absolutely right!  I work for a big fleet, and all the new diesels with SCR and DPF's are trouble.  Expensive trouble.  We are going to CNG, and they are much better.  Almost no repairs, much less routine maintenance.

 

That is what Ford's 7.3L seems to be designed for.  At least that's what Ford is emphasising, a gas engine for medium duty F series trucks.  I think GM's 8+L engine will likely be used in larger Internationals, bigger trucks than Ford's F-650 and 750.

 

Interesting that Ford will offer the 7.3L in F-250 and 350 pickups.  The 7.3L replaced the 6.8L V-10, and that engine has not been offered in pickups for 9 years.        

[truckguy82]

The new 6.6L L8T gas motor is for 2500’s and 3500’s

 

It’s a stroked L86 with slightly lower compression. You HD guys should be thrilled. The L86 is incredible.

 

400hp and 460ft lbs. the l86 is 420hp and 460ftlbs.

 

The hp numbers don’t tell the whole story, the new hd gas truck will be A LOT faster than the old 6.0.

 

 

[Cowpie]

Ford might be roomier and have better bells and whistles in the HD line than GM, but out in farm country where people do tend to use pickup trucks more for what they were intended as opposed to just cars on steroids, GM rules the roost.  GM outsells Ford all the time in Iowa for instance.  So that should be somewhat of in indicator regarding how individuals who actually need pickup trucks to get stuff done feel about Ford vs GM. 

 

The 6.6 is not a stroked 6.2 L86.  The 6.2 is an all aluminum engine.  The 6.6 is an iron block.   They may share some characteristics and even some parts, but they are not the same motor that has just been stroked.

 

And indeed, the 6.6 should be faster than the 6.0.  But the real test will be its reliability.  And the 6.0 set a pretty high hurdle for that.  That is why I will keep my 6.0 2500 for quite a while and see what happens with the new motor(s) before I consider switching. The 6.6 L8T looks like a winner, but looks can be deceiving.  I am just cautiously optimistic.  

 

 

[truckguy82]

6 minutes ago, Cowpie said:

Ford might be roomier and have better bells and whistles in the HD line than GM, but out in farm country where people do tend to use pickup trucks more for what they were intended as opposed to just cars on steroids, GM rules the roost.  GM outsells Ford all the time in Iowa for instance.  So that should be somewhat of in indicator regarding how individuals who actually need pickup trucks to get stuff done feel about Ford vs GM. 

 

The 6.6 is not a stroked 6.2.  The 6.2 is an all aluminum engine.  The 6.6 is an iron block.   They may share some characteristics and even some parts, but they are not the same motor that has just been stroked.

 

And indeed, the 6.6 should be faster than the 6.0.  But the real test will be its reliability.  And the 6.0 set a pretty high hurdle for that.

 

 

Yeah I didn’t mean “literally” a stroked 6.2L 

 

I meant “essentially”

 

The 6.2’s are pretty reliable. Ironblock + lower crompression = should he just as reliable as the 6.0.

 

Might get some carbon buildup at 100-150k miles though.

[Cowpie]

Will definitely call for catch can setup.  GDI engine are terrible for intake valve deposits from PCV contaminates entering the intake manifold.  At least with Port injection, there was some fuel dosing over the intake valves to keep this to a minimum.  I would have thought, especially with a engine designed for the HD market, that they would have used a GDI and PI combination as does some of the foreign makes in some engines.     But with GDI alone, it is going to be a test of reliability.   

[MaverickZ71]

37 minutes ago, Cowpie said:

Ford might be roomier and have better bells and whistles in the HD line than GM, but out in farm country where people do tend to use pickup trucks more for what they were intended as opposed to just cars on steroids, GM rules the roost.  GM outsells Ford all the time in Iowa for instance.  So that should be somewhat of in indicator regarding how individuals who actually need pickup trucks to get stuff done feel about Ford vs GM. 

 

The 6.6 is not a stroked 6.2 L86.  The 6.2 is an all aluminum engine.  The 6.6 is an iron block.   They may share some characteristics and even some parts, but they are not the same motor that has just been stroked.

 

And indeed, the 6.6 should be faster than the 6.0.  But the real test will be its reliability.  And the 6.0 set a pretty high hurdle for that.  That is why I will keep my 6.0 2500 for quite a while and see what happens with the new motor(s) before I consider switching. The 6.6 L8T looks like a winner, but looks can be deceiving.  I am just cautiously optimistic.  

 

 

A little to your southwest but still in what the Hollywood liberals call 'flyover country', there are definitely still pockets of Ford/GM fans, especially where there is only one dealer in the rural counties.  

 

But I'm amazed to see how much of the farm/ranch market share Dodge/Ram has taken over in 30 years.  And even more amazed to see the prices that old Dodge HD trucks with Cummins diesels bring at auction.  Old trucks with the hell beat out of them, not a straight or unscratched body panel left on them, but they seem to run like a top forever, are as tough as tanks underneath, and always bring top dollar.  

[C/K Man]

A recalibrated L8T set up to work with an Allison transmission (not sure which one) is rumored to be in the works for the Silverado 4500/5500/6500.  It may be introduced halfway through the 2020 MY.  Likely the 6.6L gas will also show up in the LCF 6500 and the Isuzu FTR as well.

 

Not much is known about the 8+L V-8, but speculation is that it is for an upcoming truck larger than the 6500.      

[2018GMC]

9 hours ago, MaverickZ71 said:

A little to your southwest but still in what the Hollywood liberals call 'flyover country', there are definitely still pockets of Ford/GM fans, especially where there is only one dealer in the rural counties.  

 

But I'm amazed to see how much of the farm/ranch market share Dodge/Ram has taken over in 30 years.  And even more amazed to see the prices that old Dodge HD trucks with Cummins diesels bring at auction.  Old trucks with the hell beat out of them, not a straight or unscratched body panel left on them, but they seem to run like a top forever, are as tough as tanks underneath, and always bring top dollar.  

Yep. If it has a Cummings in it, the seller asks for top dollar, even if the rest of the truck is falling apart, the pre emission Cummings is gold. Same said for 2004 - 2007.5 LLY & LZB Duramax. 

[redwngr]

Currently,

2019  Silverado 4500HD, 5500HD and 6500HD

L5D    Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible, 350 hp @ 2700 rpm, 700 lb-ft torque @ 1600 rpm

 

So a de-tuned L5P is what is currently offered.

Transmissions  - there are at least 16 different transmission RPO codes available for it. All are Allisons. Some are ratio differences of same series Allison, but there are also a bunch of different Allison series listed)

 

Seems logical that the 6.6L gas,  detuned for heavier duty service will also get appropriately geared Allison transmissions.

[2018GMC]

Too bad the 6.6L Gas is stuck with the 6 speed ONLY. GM needs to offer the 10 speed as an option. 

 

Betting this will happen in a year or two. 

[gearheadesw]

20 hours ago, truckguy82 said:

Yeah I didn’t mean “literally” a stroked 6.2L 

 

I meant “essentially”

 

The 6.2’s are pretty reliable. Ironblock + lower crompression = should he just as reliable as the 6.0.

 

Might get some carbon buildup at 100-150k miles though.

 

 

If I'm not mistaken, the new 6.6 gasser is a reworked 6.0, nothing to do with the half ton 6.2.....