Scottly
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Not if ya gear it right.
Why are 2500 6.4’s not selling?
- Thread starter JerryETX
- Start date
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Scottly
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They can focus on deeez nuts... Inline 6 for cars? BMW builds great ones. For trucks? Focus...
Scottly
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I was the fly on the wall...I overheard the whole thing. Jerry: "Are they working on a new power platform?" Salesguy - "LIE LIE LIE LIE LIE, so you better buy this here one".
2003F350
Senior Member
Ford's old straight 6 and Jeep's inline 6 would take exception to it. And they take to power adders pretty well, and get up to speed pretty decently.
I think a twin turbo straight 6 would do wonderfully well in the HD truck platform, especially if it's geared right. That 8-speed would probably do just fine.
Scottly
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I don't disagree, but the old Ford 300, a torque monster in it's own right, was 4.9 liters...The Jeep was a 4.2... 3.0 rung out to produce high numbers just doesn't sound like an engine with a long life span. I'm sure it'll make it to the end of the warranty, though....
Dusty
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Although this is not relevant to HD trucks, in the half-ton segment Ram increased their Fuel Economy & Greenhouse Gas Rating from a 4 to a 5, and Smog Rating from a 5 to a 6 with the Hurricane. Reducing the displacement and adding forced induction and direct injection, this follows many other manufacturers (especially Ford and Europeans) methods to decrease fuel consumption and maintain market acceptable power levels.
Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 117667 miles.
Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 117667 miles.
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I dunno. Like others have said, there have been a lot of really solid I6 over the years. Pros and cons like everything.
Personally, I don't trust Stellantis to get it right out of the gate. Not enough trust to buy one, at least. That said, building a motor from scratch with the intent for it to be boosted is going to be significantly better for durability and longevity vs slapping FI on an existing motor. I do like they are using an electric water pump to push coolant to the turbos, even if the motor is off, and not relying on just oil cooling. Modern synthetics don't coke like the old mineral oils did.
I'm willing to be won over, I suppose, but I think I'll be in my 6.4L truck for a very long time. Maybe until I'm in the ground.
Riccochet
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While fine for passenger vehicles and light duty trucks, I just don't feel they are cut out for heavy duty trucks, 3/4 and 1 ton. Not at 3.0L of displacement.
2003F350
Senior Member
They will probably up the displacement a bit for HD trucks. It wouldn't surprise me in the least. By how much? I don't know. Enough to get the HP up over 350 without adding a lot of boost pressure.
Fatbob Frank
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You're probably right...
But it seems like no one, not just auto manufacturers, are building anything with longevity in mind anymore...
Riccochet
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I'm thinking it'll have to be big enough to put out 425-450 HP and 450-500 ft/lbs at low boost pressure to convince buyers away from, and be competitive against, the Ford 7.3 and GM 6.6.
TFL has already shown the little 3.0 TT-I6 to have cooling issues when being worked hard with just 8000 lbs behind it. No way that engine could be in front of 12,000 - 15,000 lbs and not have issues sooner.
The whole reason for large displacement is so the engine isn't really working hard in those situations.
2003F350
Senior Member
Yeah, smaller (compact) engines tend to have issues with cooling at higher power outputs anyway, there's just not enough material there to dissipate the heat when you try to make them compact. They'll at least have to increase the physical size to give that heat somewhere to go, along with giving it the ability to withstand higher combustion pressures.
That was a major downfall to the 6.2 diesel GM tried out back in the 80's - there wasn't enough material in the block, and the cylinder walls tended to crack, the mains tended to break, etc. etc. and it was naturally aspirated. If they'd tried to boost it it would have never held up at all.
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QC issues in block casting was a big issue. If you got "a good one" and took care of it, 300k before a rebuild was pretty doable. Assuming you had a lot of patience because they were slooooooooooow. I wanted a flare side one real bad...until I test drove it and realized you could take a nap while during a 0-60 romp.
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You not need yer Cummins anymore? Man, I would keep that puppy forever, because if U come back with the need, anything U get now, tho more tech, not be as reliable as that 2007, just saying.
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What is the saying, Displacement not Replacement, lol.
Dusty
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I think its, "No replacement for displacement," at least that's the way I've always heard it.
Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 117717 miles.
Riccochet
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There is a replacement for displacement, it's called boost. But there's a balancing act between power and reliability. You can make a 1.5L 3 cylinder engine put out 1500 HP....for 10 seconds. Or you can make a 572ci 9.4L Hemi put out 1500 HP for years.
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YEAH, that saying has been manipulated all the time, but the jest is: Smaller motor not gonna be able to do in long run wat a bigger motor will. I'll stick with my poor miserly lil 2019 V8 Hemi VVT with the whopping 395 HP, works for dis BOIRD.
