2019 Silverado

Croatan_Kid said:
Wasn't the 4.5 designed with reverse flow heads? I always wanted to see it get made just to see how well that worked.
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Then take a look at 6.7 powerstrokes. They exhaust through the valley and the intake flows through the valve covers to the outside of the heads.

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Tim C said:
Then take a look at 6.7 powerstrokes. They exhaust through the valley and the intake flows through the valve covers to the outside of the heads.

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Damn, learn something new every day:
inside-look-6-7-power-stroke-including-2015-updates2-640x479.jpg

An Inside Look At The 6.7 Power Stroke
 
Technically it will be the 2020 Duramax, but no need for a new thread. Numbers are looking solid for the GM's shot at a 3.0 diesel:
Screenshot_20190603-104139.png


More torque at lower RPM, and more HP at a higher RPM. Coupled with lower compression, and an aluminum block, inline 6 configuration. That's gonna be hard to beat.
 
Chevy for the win.....I looked at the ecodiesel a few years back and read a bunch of threads about cam gear failure (it walked off the press taper iirc).... factory solution was a change in oil viscosity!
I would say let gm shake the bugs out of that powertrain for 5 years and you will have a desirable (made of gold at resale) truck. I bet the first gen. has some lb7 type of Achilles heel lurking somewhere.....I am going to put my money on block casting and transmission failure.
 
jeepinmatt said:
Technically it will be the 2020 Duramax, but no need for a new thread. Numbers are looking solid for the GM's shot at a 3.0 diesel:
View attachment 294939

More torque at lower RPM, and more HP at a higher RPM. Coupled with lower compression, and an aluminum block, inline 6 configuration. That's gonna be hard to beat.
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WOW! That Duramax 3.0 has the same torque as my 01 Ram 5.9, and more hp!
 
BigBody79 said:
Great, but can they make a switch or electrical component that doesn’t take a shit the first month past warranty.
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Sounds like they have it dialed in perfectly then.
 
jeepinmatt said:
Probably same size or larger brakes, and twice as many transmission speeds too.
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You are correct on the transmissions 5spd vs 10spd. I also bet that you are correct on the brakes being equal or better. More fuel for @UTfball68 arguement that a new 1/2 ton is equal or better than a 20-30 yr old 3/4 ton.
 
drkelly said:
More fuel for @UTfball68 arguement that a new 1/2 ton is equal or better than a 20-30 yr old 3/4 ton.
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Hey...I'm just over here perusing the tow pig thread, enjoying the poser shots now that I know they have immovable trailers hooked to them. And someone needs to pipe up in that school band equipment tow thread and let them know if DOT scales are an issue, he's doing the impossible. #NC4x4wheremiracleshappen
 
drkelly said:
You are correct on the transmissions 5spd vs 10spd. I also bet that you are correct on the brakes being equal or better. More fuel for @UTfball68 arguement that a new 1/2 ton is equal or better than a 20-30 yr old 3/4 ton.
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So if your Dodge Cummings got 30mpg uphill pulling a broke down 18 wheeler with a fully loaded 53ft trailer into the wind, then an aluminum block inline 6 diesel with the same power numbers in a lighter truck with twice the transmission speeds should easily get 60-65mpg in the same scenario...
 
jeepinmatt said:
So if your Dodge Cummings got 30mpg uphill pulling a broke down 18 wheeler with a fully loaded 53ft trailer into the wind, then an aluminum block inline 6 diesel with the same power numbers in a lighter truck with twice the transmission speeds should easily get 60-65mpg in the same scenario...
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Depends if you're pulling from the bumper or a gooseneck :flipoff2:
 
That's pretty impressive that it gets better EPA numbers than the diesel Colorado, while having more weight, bigger engine, and higher frontal area.
 
drkelly said:
But probably 1.5-2x the mpg?
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It definitely makes the rest of the engine lineup below the 6.2 and 5.3 very questionable for those that actually use a truck. The fuel mileage will be great for those that commute but still need some decent towing capacity for a 1/2 ton.
 
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