PSD or Cummins
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
Originally Posted by killaford
length of effective powerband.
the cumins pulls from 1000rpm to 2500rpm.
the 6.0 pulls from about 1300-1500rpm to 4000+rpm.
you do the math.
the cumins pulls from 1000rpm to 2500rpm.
the 6.0 pulls from about 1300-1500rpm to 4000+rpm.
you do the math.
The 6.0 has 325HP @ 3300RPM, and 570 ft-lbs at 2000RPMs. After 3300 RPM, torque and HP will start to drop.
The efective RPM range on both engines is exactly the same. Except the cummins starts making power and peaks 400 RPM lower - better for towing.
The 5.9 and the 6.0 will both keep going forever at 2900-3000RPM, but I honestly would like to see how long a 6.0 would last going at it at 4100 RPM
Last edited by Lead Head; Oct 10, 2007 at 08:24 PM.
Logistics Pro
Joined: Sep 2006
Posts: 4,863
Likes: 4
From: Airdrie Alberta
Originally Posted by jimbow
A friend of mine just bought a 06 cummins,this truck seems more powerful than the ford diesel's ive been driveing
Junior User
Joined: Oct 2005
Posts: 95
Likes: 0
From: Vancouver, BC
I dunno, the cummins has tons of low end torque but the one I drove kinda felt like it lost power once you got up around 2500-2600 rpm (it was a 98 24v) where as my 7.3 felt like it had a little broader power band. i've never driven a 6.0 or 6.4 so i can't comment on them, but from what I read on here they make there power 2k rpm and above.
Elder User
Joined: Sep 2005
Posts: 695
Likes: 0
Originally Posted by Lead Head
The efective RPM range on both engines is exactly the same. Except the cummins starts making power and peaks 400 RPM lower - better for towing.
The 5.9 and the 6.0 will both keep going forever at 2900-3000RPM, but I honestly would like to see how long a 6.0 would last going at it at 4100 RPM
The 5.9 and the 6.0 will both keep going forever at 2900-3000RPM, but I honestly would like to see how long a 6.0 would last going at it at 4100 RPM
im not talking about the area betwwen max torgue and max horsepower.
im talking about the begining of usable power thru power tailoff on top.
the 6.0 is deturned stock but is cammed to run up at 4K.
daily drive or tow with the engines and you will see what im talking about.
its double the effective spread and that is why it tows better and has better drivability.
Freshman User
Joined: Dec 2006
Posts: 27
Likes: 0
From: Upland, CA
That's what they make transmissions for. To keep your engine rpm's in the powerband. Torque gets it movin', horse power keeps it movin'.
My $.02 has me in a Ford truck for style and durability, a Chevy for the transmission and comfort, and a Dodge for the engine. However, that changes from year to year. Each company will make advances in their trucks that cause me to add, change, or drop a choice. All that said, I drive an '03 Ford.
My $.02 has me in a Ford truck for style and durability, a Chevy for the transmission and comfort, and a Dodge for the engine. However, that changes from year to year. Each company will make advances in their trucks that cause me to add, change, or drop a choice. All that said, I drive an '03 Ford.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Freshman User
Joined: Dec 2006
Posts: 27
Likes: 0
From: Upland, CA
The only way to make that comparison is to take a single truck and two engines, a CTD and a PSD. Make the test on one, change only the engine, and test the other. That's not going to happen. You might just as well throw in the D-Max too.
Laughing Gas
Joined: Aug 2005
Posts: 1,156
Likes: 10
From: Drain Oregon and Sacramen
Originally Posted by Lead Head
900k in 4 years. Thats 616 miles every 24 hours, or an oil change every 5 days. Thats alot of driving.