Full Answer
How much power can a Cummins engine run?
When pushed to its absolute limit, the OEM fuel system on the 6.7L Cummins (lift pump, CP3, injectors) can support as much as 530rwhp and roughly 550rwhp with a turbo upgrade.
What are the performance roadblocks of a Cummins Engine?
Performance Roadblocks of the 6.7L Cummins 1 Roadblock #1: Automatic Transmission. ... 2 TCM Tuning Helps. ... 3 The 68RFE Conundrum. ... 4 Roadblock #2: Head Gasket Issues. ... 5 Head Studs & Beyond. ... 6 Roadblock #3: Factory Turbo. ... 7 Fixed Geometry Turbo Upgrade. ... 8 Roadblock #4: Stock Fuel System. ... More items...
How much hp and TQ does a stock truck have?
The Hp comes on sooner on the newer 6.7 and Tq is flat. The stock trucks that I have seen dyno sheets on for stock is around 275hp and 540ftp.
What is your idle pressure at full boost with stock trim?
Ive Seen Spikes In Stock Trim About 32, Levels Out To 24, With A Programmer It Spikes To 38 And Falls To 25, Now With The Boost Fooler It Spikes To 39 And Hangs At 32 The map sensor on mine reads some where around 14.6 at idle which is atmospheric pressure. At full boost it reads 37.4 and stays there as long as I keep on the throttle.
How much power can 6.7 Cummins hold?
The new high-output engine boasts 420 hp and 1,075 lb-ft of best-in-class torque. For RAM 2500 and 3500 (equipped with a 68RFE Auto) HP and torque have increased to 370 hp and 850 lb-ft to provide the right power for these models.
What RPM should a 6.7 Cummins run?
The Cummins is good to just over 4200rpm. It's 3200rpm redline is not in any danger.
Can you get the high output Cummins in a 2500?
If you opt for a Ram 2500, the truck will come with the standard output Cummins engine with 850 lb-ft. of torque. Another key difference is where the peak torque hits in the rpm band. The standard output Cummins provides peak torque at 1,700 rpm, while the High Output version will do so at 1,356 rpm.
How much horsepower does a stock 2008 6.7 Cummins have?
The new Cummins is almost 1.0 liter larger, now displacing 6.7 liters in its trademark inline-six configuration. Horsepower is increased significantly to 350 (up 25 from the previous 5.9-liter I-6), and torque is now 650 pound-feet at 1600 rpm, up from 610.
Is it worth deleting 6.7 Cummins?
There are two primary reasons for deleting the DPF system on the 6.7 Cummins. First is for performance purposes. Since the DPF system is part of the exhaust, it creates a lot of backpressure which detracts from performance potential. Secondly, the DPF system is prone to clogging and costs $2k+ to replace when it clogs.
Is Dodge dropping Cummins?
The Dodge Cummins lives on in the 2021 Ram pickup truck Dodge began offering Cummins engines in its heavy-duty Ram trucks in 1989 and never stopped. For the 2010 model year, Dodge Ram trucks spun off into its own brand called Ram.
How much horsepower is a 6.7 Cummins?
The Cummins 6.7L Turbo Diesel is the most powerful engine option for RAM 2500 and 3500 pickup trucks. Producing up to 400 horsepower and 1,000 pound-feet of clean diesel torque, this powerhouse helps RAM deliver best-in-class towing.
How many hours does a 6.7 Cummins last?
On average, a 6.7L Cummins engine will last for between 250,000 and 350,000 miles.
What fuel mileage does a 6.7 Cummins get?
The 2022 RAM 2500 comes equipped with a 6.7-liter Cummins® Turbo Diesel Inline-6 and 6.4-liter HEMI® V8 engine that produces up to 410 hp and 429 lb. -ft. of torque in 4×4 configuration. The engine is rated to do up to 12 city/18 highway/15 combined MPG on the fuel economy when running in the four-wheel drive mode.
What is considered high mileage on a 6.7 Cummins?
But most diesel truck engines do not last that long, not without major work. To be more precise, Ram claims its 6.7L Cummins engine will last for 350,000 miles. For this reason, a Cummins-powered Ram 2500 with good service records is considered high mileage between 350,000 and 500,000 miles.
Can you sleeve a 6.7 Cummins?
The Cummins cylinder block repair sleeve makes cylinder block repairs simpler and easier than ever before.
Are 6.7 Cummins reliable?
That said, the 6.7 Cummins is a fairly reliable engine overall. This is especially true if you opt to delete some of the emissions equipment like the DPF and EGR systems. Beware of potential emissions or legal implications, though.
TCM Tuning Helps
To reiterate, with sound TCM calibrating accompanying an ECM file that nearly doubles the 6.7L Cummins’ factory horsepower, the stock 68RFE can live under the right foot of a sensible driver. We’ve even seen one hold up in a truck making 570rwhp and more than 1,100 lb-ft.
The 68RFE Conundrum
Tearing a transmission down and stuffing it full of better parts usually yields great results if the work is performed by a reputable builder.
Head Studs & Beyond
Faced with a blown head gasket, and after resurfacing the head and inspecting the trueness of the block, most 6.7L Cummins owners opt to install ARP head studs when things go back together. At this point, the average tune-only (500 to 530rwhp) ’07.5-newer Ram is good to go for the long-haul.
Fixed Geometry Turbo Upgrade
Replacing the factory VGT with a T4 flange, a fixed geometry turbocharger is one of the best ways to wring every ounce of power out of the 6.7L Cummins’ stock fuel system.
Upsizing the Fuel System (From Tank to Engine)
For those that simply can’t resist pursuing more power, your upgraded lift pump, injectors and CP3 should be purchased according to your horsepower goal. For instance, a truck making more than 600rwhp needs a lift pump that’s capable of flowing 150-gph.
