2019 HD ram - 1000 ft lbs
- Thread starter takethebounce
- Start date
skegpro
Active VIP Member
What's the truth?
Rjjtcross8
Active VIP Member
The new rams look sharp
Caper11
Active VIP Member
Cdnfireman
Active VIP Member
no he's not. HP is a derived figure, there is no device that measures HP directly. the formula is HP= torque * RPM/5252. The torque is measured using a prony brake or dynamometer.
Cdnfireman
Active VIP Member
What temperature are you referring to? Operating temperature or EGT?
Caper11
Active VIP Member
Your forgetting about electronics!! Rated HP and torque can be changed independently.
I had a detroit with 1650 torque, and 430hp.
It made 470hp on the cruise and the same torque, and that was in 2003.
The 2010 ram was 350hp and 650 ftlbs of torque, when the 2011 HO came out it was still 350hp and 800ft/lbs
Last edited:
Stg2Suby
Active VIP Member
One things for sure: Horsepower = Torque X RPM / 5252. Torque is the twisting force being developed by the crankshaft. Horsepower is a measure of the work being done and depends on the twisting force x the RPM the crank is turning. You can't control the HP directly, only the torque and RPM.
ABMax24
Active VIP Member
No, torque and power are directly linked. At any point on a torque/power curve the HP will always equal torque*RPM/5252.
Think of it this way, a 200lb person on a 10ft breaker bar generates 2000ftlbs of torque, far more than a 6.7 Cummins, yet because there is no RPM there is no power and the torque is meaningless. Same with a diesel engine, torque can be a useful measure of low end grunt, but its the RPM that makes it do the work, being the reason you create more power having 600ftlbs of torque at 3000RPM then having 1000ftlbs of torque at 1500RPM.
Your above examples show that Cummins has changed the power/torque curve of the engine, but because torque was added down low only the peak HP figure remained the same.
tmo1620
Active VIP Member
I like the new ram HD, well done truck, all the duramax and powerstroke loving haters will always hate, but man these things are getting pricy, $109,000 for a SRW 3500 limited..... kinda glad I bought a 2018 after seeing the prices, $71,000 for a 2018 SRW 3500 limited seems like an easier pill to swallow
Dawizman
Active VIP Member
Where are you guys seeing prices?
skegpro
Active VIP Member
skegpro
Active VIP Member
Re, the torque HP discussion, you’ll see when they do the gauntlet. Big torque down low is great to get off the line but you need to keep making torque through the rpm to make HP. You want a table flat torque line from low rpm to high ideally.
The 8.9 Cummins in my Peterbilt 348 has many different power ratings. From 300-450hp and 900-1250 torque. All they do is play with the torque curve via fuel and boost to create more or less where the want the torque in the rpm range. They put these engines into fire trucks with 450hp, they want them to be fast, while a gravel truck will get 350hp, the 1000ft lbs peak torque is the same, but the curve is pushed lower or higher in rpm, which changes the HP rating.
A big big blast of torque down low that falls sharply after is good for stop and go around town but on the highway will leave more to be desired.
The 8.9 Cummins in my Peterbilt 348 has many different power ratings. From 300-450hp and 900-1250 torque. All they do is play with the torque curve via fuel and boost to create more or less where the want the torque in the rpm range. They put these engines into fire trucks with 450hp, they want them to be fast, while a gravel truck will get 350hp, the 1000ft lbs peak torque is the same, but the curve is pushed lower or higher in rpm, which changes the HP rating.
A big big blast of torque down low that falls sharply after is good for stop and go around town but on the highway will leave more to be desired.
skegpro
Active VIP Member
I am a ford guy.
But.
Fawk me the interiors on these rams are nice.
Still like the boxed fender flairs on the first duallys better, but that's about it.
Ford and chev. Better bring their a games into 2020.
But.
Fawk me the interiors on these rams are nice.
Still like the boxed fender flairs on the first duallys better, but that's about it.
Ford and chev. Better bring their a games into 2020.
You need to read about torque and HP. Look at the graphs for the 6.7 Cummins. Like I explained in my last post HP can remain the same with a higher torque rating because they aren’t pushing the torque into the higher rpm to affect max HP. It’s down low they’re adding torque. No electronics. It’s just more boost and fuel. Or even just adding fuel if there is enough boost already made to burn the diesel off.
Chronic Cat
Active VIP Member
Same as our beloved sport of power tobogganing and the argument of whose sleigh is better, Ford dodge and a chev are all top shelf overpriced units. Every manufacturer has its own issues, and it'll always be that way. The big 3 will never be able to please the entire crowd. Simple as that.
I dream of the the day that you can custom spec your new pickup like ordering a new semi. It would be pretty sweet if you could pick your own Cab & chassis then decide which engine and trans also.
Id personally take a new F350, stuff a new Cummins under the hood with an Allison behind it and giver!
I dream of the the day that you can custom spec your new pickup like ordering a new semi. It would be pretty sweet if you could pick your own Cab & chassis then decide which engine and trans also.
Id personally take a new F350, stuff a new Cummins under the hood with an Allison behind it and giver!
- Thread starter
- #79
takethebounce
Active VIP Member
Yeah you don’t often see a Ram truck with a Durmax or Powerstroke under it but you will see guys stick a Cummins in anything.
Chronic Cat
Active VIP Member
You are correct, but for the record, 99% of the swaps are done with mechanical 12v's due to their shear ease of electrical. 1998 rams and older. Also because you can get big big power reliably and easily. Rarely do you see guys swapping in new stuff as it isn't worth the cost and headaches associated.
Similar threads
