Stellar fuel economy with comparable towing to a 5.3L.
30+ mpg is easy with this truck on the highway at reasonable speeds.
Diesels have doubled in hp.
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30+ mpg is easy with this truck on the highway at reasonable speeds.
Don't forget BMW diesels. My 3 liter straight 6 has two turbos, 265 hp, and 400+ lb ft of torque. Other parts of the car have failed, but the engine is running like new. High fuel rail pressure, lots of boost. Unfortunately, no longer available in the USA. There are versions sold outside the USA of the 3 liter engine with 400 plus hp, achieved with four turbos.
Look at the RPMs of the ratings. Torque and horsepower keep growing further apart.
Everything has a higher horsepower rating because that is what sells. Doesn't mean that it will put out that much power all day long. The engines of 30 years ago could put out rated power all day long because they were taken from truck and off highway applications with the exception of some cars. The 5.9 "Cummins" was a tractor engine designed to put out less than 100hp.
Everything has a higher horsepower rating because that is what sells. Doesn't mean that it will put out that much power all day long. The engines of 30 years ago could put out rated power all day long because they were taken from truck and off highway applications with the exception of some cars. The 5.9 "Cummins" was a tractor engine designed to put out less than 100hp.
P-pump 5.9 Cummins Bs have been fire ringed, pump plated, & massaged to 1000+ HP for a while now. The DPF system has killed mor engines than anything!
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I think diesels were overbuilt back then. Maybe iron was cheap at the time. At one time they did have a manufacturer try to make a diesel from a gas block and it was a disaster. Can't remember if it was Ford or gm that did that
Ford couldn't make it work with thier V6 diesel.
I think it was supposed to get around 28mpg.
When you start looking at fuel cost and maintenance... and convert that to $$$ per mile it can get tough.
Maybe Chevy can get it done.
Dodge was doing ok with it.
I don't guess either one has a gasser that can compete.
Cummins 6.7 has different bore and stroke.
High pressure common rail, computer controls, etc.
Just the same an 80s Chev V8 made less than most 4 bangers now.
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It's still the same block. They just use a different crank, or changed the pistons to give it a longer stroke. Not sure which, I never looked into it
Electronics ie computers are a huge part of it. Some newer vehicles are using varible vane turbos that porsche developed years ago. Much tougher alloys also makes a huge difference. It wasn't that long ago 80-100k miles was worn 150 plus was borrowed time. Look at the Pontiac Firebird of the Smokey and the Bandit era. 7.7 Liters and what 200hp?
GM Supposedly did that with the olds 5.7 diesel which was a 454 block, oversized iron crank, thicker heads and it had most of the upgrades applied that any tractor diesel had.
Sadly bean counters cut the number of head bolts and the grade, no water sensor and no fuel water separator.
They also used an undersized automatic transmission that wasn’t designed for a low rpm diesel.
The 5.0 in my 96 F150 is rated at 215HP (maybe 225 I cannot remember). The modern Coyote 5.0 is 480 HP...
You decide how much of the HP to use. Here is the plot of torque and hp as a function of RPM for a 2022 Duramax. To get the high horsepower numbers you have to have your foot in it to get the turbo working and need to bring the revs up above 2800. Notice how peak torque is at 1600 rpm and that the torque drops off drastically after that. Peak torque is 910 ft lbs at 1600 rpm. Peak HP is 425 at 3400 rpm.
The torque scale labeling is messed up. Take the HP, divide by the RPM and multiply by 5252.
The torque scale labeling is messed up. Take the HP, divide by the RPM and multiply by 5252.
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Did you mean 1000+ HP or 1000+ Ft lbs of torque.
tripled and quadrupled
The cat 3208 produced less than 200HP when naturally aspirated. Of course, everyone got the turbo model which in one of its configurations cranked out 435HP. Not really a new thing IMO.
I remembered something else, in a marine application all these power plants have always had way way more power then in vehicles .
Unlimited cooling water is why ,and as manufacturers got better at cooling the engine suppliers permitted more output.Cummins and dodge come to mind.
Unlimited cooling water is why ,and as manufacturers got better at cooling the engine suppliers permitted more output.Cummins and dodge come to mind.
It was a normal 350 gasser with new heads, no special 454 block
You guys missed out on diesels in cars.
400HP & 424foot pounds (575Nm) from 5cyl 2.4L Volvo diesel with upgraded impeller in the turbo.
338hp with basic IC, and pipes.
https://en.bsr.se/tuning-kits/t/5815/volvo-v60-d4-24d-awd-181hp-2014-2015-d-5244-t12
400HP & 424foot pounds (575Nm) from 5cyl 2.4L Volvo diesel with upgraded impeller in the turbo.
338hp with basic IC, and pipes.
https://en.bsr.se/tuning-kits/t/5815/volvo-v60-d4-24d-awd-181hp-2014-2015-d-5244-t12
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