6.4 getting a make over or going away?

[JerryETX]

The 3/4 ton pickup is technically a light duty truck the same as the 1/2 ton.

I know there’s not much difference in class but there’s a big difference in suspension between my 2016 Ram 2500 and all the 1/2 tons I’ve owned.

In terms of the torque you mentioned the only time I’ve seen those figures from a gas engine is with turbo’s. A naturally aspirated gas engine will have a hard to hitting peak torque at lower rpm’s. The new 6 cylinder Tundra engines and the Ford Ecoboost hit peak torque well under 3k rpm’s. The 3.5 ecoboost I had hit 480 lb-ft of torque at 2500 rpm’s which why they’re so popular. As mentioned I don’t see those smaller boosted engines in a HD truck.

 

[HEMIMANN]

There's a big difference in the frames and in the weight as well. A whiz motor can't pull 15,000 lbs reliably or for long.

 

[pacofortacos]

I know there’s not much difference in class but there’s a big difference in suspension between my 2016 Ram 2500 and all the 1/2 tons I’ve owned.

In terms of the torque you mentioned the only time I’ve seen those figures from a gas engine is with turbo’s. A naturally aspirated gas engine will have a hard to hitting peak torque at lower rpm’s. The new 6 cylinder Tundra engines and the Ford Ecoboost hit peak torque well under 3k rpm’s. The 3.5 ecoboost I had hit 480 lb-ft of torque at 2500 rpm’s which why they’re so popular. As mentioned I don’t see those smaller boosted engines in a HD truck.

I totally agree on the differences - but how many 3/4 tons are on the road. Many people wouldn't mind jumping from a 1/2 to 3/4 ton, but the number of people willing to go from 1/2 to a 1 ton as a driver won't be many.

There have been quite a few NA gas engines with lower rpm torque - the 5.9 magnum and V10 are recent ones. So it is doable, how hard it is to get that low rpm torque and high rpm power is the question.
Maybe a more complex intake manifold with 3 length runner systems?

The 5.9 and V10 both fell off hard in power on the top end - esp. the 5.9.

 

[JerryETX]

I totally agree on the differences - but how many 3/4 tons are on the road. Many people wouldn't mind jumping from a 1/2 to 3/4 ton, but the number of people willing to go from 1/2 to a 1 ton as a driver won't be many.

There have been quite a few NA gas engines with lower rpm torque - the 5.9 magnum and V10 are recent ones. So it is doable, how hard it is to get that low rpm torque and high rpm power is the question.
Maybe a more complex intake manifold with 3 length runner systems?

The 5.9 and V10 both fell off hard in power on the top end - esp. the 5.9.

I hear ya. I had a 97 Ram 2500 with that V10. Towing power was horrible same as mpg but it would run. I wish I remembered was rear end it had but obviously pretty high.

 

[ramffml]

I totally agree on the differences - but how many 3/4 tons are on the road. Many people wouldn't mind jumping from a 1/2 to 3/4 ton, but the number of people willing to go from 1/2 to a 1 ton as a driver won't be many.

There have been quite a few NA gas engines with lower rpm torque - the 5.9 magnum and V10 are recent ones. So it is doable, how hard it is to get that low rpm torque and high rpm power is the question.
Maybe a more complex intake manifold with 3 length runner systems?

The 5.9 and V10 both fell off hard in power on the top end - esp. the 5.9.

You should check out towing reviews of the Ford 7.3. Hate to say it but it crushes all other gassers. One guy was towing well over 20K with it, forget his name. And that engine is just getting started, it is tuned very conservative with peak numbers barely beating the GM 6.6 and Ram 6.4, but down below it must be making much more usable torque.

I know, Ford. But still, at the very least one can hope it inspires Ram to give us something competitive.

Edit: found it, apparently grossing 27K pounds!

7.3 godzilla! vs 27,000 lbs of hay!

another tow review and test with some more data on how this truck has worked out for us. thanks for watching! and remember! never overload your truck! lol

www.youtube.com

 

[Rbertalotto]

No I haven't but apparently I missed something please explain

The only engines that will be available are going to be turbocharged straight six cylinders. Huge torque and HP, should get better milage. Lots of YouTube videos about it. All big trailer trucks are now straight 6......can't get a V8 in the big trucks any longer. Four cycle straight six engines are inherently stable and can easily be designed for any needs a pickup might have.

 

[HEMIMANN]

The only engines that will be available are going to be turbocharged straight six cylinders. Huge torque and HP, should get better milage. Lots of YouTube videos about it. All big trailer trucks are now straight 6......can't get a V8 in the big trucks any longer. Four cycle straight six engines are inherently stable and can easily be designed for any needs a pickup might have.

They are all diesel. Max torque can't be achieved with spark ignited engines, hence the V8s.

 

[Rbertalotto]

"They are all diesel. Max torque can't be achieved with spark ignited engines, hence the V8s"

There is a great YouTube video on this. V8 engines can easily produce HP, but straight 6 engines can easily produce more torque.......this is why all big trucks are now straight 6 engines. With modern technology there is no reason we can't see I torque monster straight 6

 

[HEMIMANN]

"They are all diesel. Max torque can't be achieved with spark ignited engines, hence the V8s"

There is a great YouTube video on this. V8 engines can easily produce HP, but straight 6 engines can easily produce more torque.......this is why all big trucks are now straight 6 engines. With modern technology there is no reason we can't see I torque monster straight 6

Big trucks are straight six because they have diesels. Straight six is the strongest, best balanced, of all engine architectures. No splayed journal bearings. So they run the cylinder pressures up to the moon. Can't do that on spark-ignited engines. Can only whiz them to high rpm. A straight six is overkill for a gasoline engine - V8's have the most compact architecture to pack more cylinders into the smallest volume.

Which is why I call out Stellantis for trying to put a BMW sport sedan engine into a pickup truck. It's all about fuel mileage now - not about durability or towing.

 

[SouthTexan]

Some of the best and most reliable gasoline truck engines were straight 6 engines. One of the best was the Ford 300(4.9L). It didn't make much horsepower or rev that high, but it had plenty enough low end torque to pull a barn down. Out pulled my cousins 5.0L V8 he had in his F150 all the time, but he would blow me away unloaded.