Quick Answer

Quick Answer: Which is better a 12v or 24v Cummins?

When it comes to serious power and performance the 12v 5.9 Cummins takes the win. These engines are known to hold up better at extreme power levels when compared to the 24v engines.

How do you tell if it’s a 12v or 24v Cummins?

If your looking at a 94-02 with the original badges on the doors of the truck a 12v will say “cummins turbo diesel” and a 24v will say “24v cummins turbo diesel”.

Are 24 valve Cummins good?

Cummins 5.9 24v Reliability

Outside of the fuel system, the 5.9 24v is a very reliable engine. The engine internals such as the pistons, rod, and crankshaft will last a lifetime and can hold up beyond 500,000 miles.

When did Cummins go from 12v to 24v?

However, in 1997, when Dodge and Cummins were gearing up for the transition to the all-new 24-valve 5.9L ISB set to be released midway through the ’98 model year, the remaining 12-valve engines were built using the 24-valve’s block and crankshaft.

Why are 12v Cummins so good?

What made the Cummins so popular was the fact that its peak power and torque was insanely usable—in fact, the redline is only at 3,000 RPM! The 12-valve was able to get respectable fuel economy while producing torque figures never-before seen in an ordinary pickup truck.

How many MPG does a 24v Cummins get?

All five trucks we own average 29 MPG highway, and 24 MPG in town. Cummins 5.9L has the fuel economy, speed, and the power to pull.

Are 12v Cummins reliable?

The Cummins 12v/6BT is widely regarded as the best and most reliable diesel engine ever produced. These engines are extremely simplistic, operating with mostly mechanical components rather than complicated electronic ones. The simplicity allows for massive power potential in conjunction with ultimate reliability.

How much HP does a 24v Cummins have?

24V 5.9L Cummins Horsepower & Torque

Year Trans Horsepower
1998.5-1999 Auto 215 horsepower
2000-2002 Auto 235 horsepower
1998.5-2002 Manual 235 horsepower
2001-2002 High Output Models Manual 245 horsepower

How much horsepower does a 5.9 24 valve Cummins have?

The last generation 5.9l Cummins engines from 2003 to 2007 used HPCR pump and 24 valves. They have 305-325 HP and 600-650 lb-ft of torque.

Is the 5.9 or 6.7 Cummins better?

To sum up, the more simplistic 5.9 fixed geometry turbo means that while it tends to be more reliable, the more advanced 6.7 variable geometry turbo gives better performance. The Exhaust Brake is a big part of why the 6.7 Cummins is such a powerful towing machine.

What is the best year for 12 valve Cummins?

1996-1998 has the best injection pumps (perhaps ignoring the 1989-1993 VE) and stronger automatics compared to earlier years. Look at the buyers guide section in the thread below. The 1998 12 valve trucks were only built in 1997.

What should I know about 24 Valve Cummins?

12V vs 24V Cummins: Which One is Better?

What Dodge Cummins engine is the best?

Cummins 6.7L Turbo Diesel

Figure 4: The 6.7L Turbo Diesel is the most powerful diesel engine for the Dodge RAM. Source: Cummins.com. The Cummins 6.7L Turbo Diesel is the current incarnation of this legendary diesel engine. It is packed with features that make it the best Cummins engine that is currently on the market.

Are 2nd Gen Cummins reliable?

These trucks had big shoes to fill because of how successful and durable the first generation Cummins was. Thankfully, despite becoming slightly more sophisticated, these trucks are also very reliable. Much of your truck’s reliability, however, is dependent on you being an expert on 2nd Gen Cummins Maintenance.

How much is a 12 valve Cummins engine worth?

A shop skilled in Cummins swaps will charge around $12,000 to $15,000 to take a 12-valve version with the 5R110.

How much HP can a stock 12v Cummins handle?

The forged-steel connecting rods found in the 12-valve 5.9L (and ‘98.5-’02 24-valve engines) are of an I-beam design and capable of easily handling 800 rwhp in stock form.

Which Cummins is the most reliable?

It’s safe to say that the 5 has been the most reliable diesel engine of all time. There are 12 cylinders in this 9L Cummins 6-Valve. The 5. A 9L 12-Valve comes with one million miles of durability and has a capacity of 1,000 lbs.

What year Cummins is most reliable?

2007

  • #1 Best Year: 2019 Dodge Cummins.
  • #2 Best Year: 2018 Dodge Cummins.
  • #3 Best Year: 2020 Dodge Cummins.
  • #4 Best Year: 2017 Dodge Cummins.
  • #5 Best Year: 1989 Dodge Cummins.
  • #6 Best Year: 1990 Dodge Cummins.
  • #7 Best Year: 1994 Dodge Cummins.
  • #8 Best Year: 1995 Dodge Cummins.

How many miles will a 5.9 Cummins last?

The Cummins brand is extremely reliable and prides itself on long-lasting engines. The 5.9-liter engine can expect to churn out 300,000 to 400,000 miles.

How can I make my 6.7 Cummins get better gas mileage?

Drive mindfully

  1. Drive your truck with fuel economy in mind.
  2. Schedule regular maintenance for your 6.7-liter diesel engine.
  3. Replace the manufacturer’s air filter and intake with a diesel performance air filter and intake.

How can I get better gas mileage in my 5.9 Cummins?

How to Improve Fuel Mileage With Cummins Diesel

  1. Drive your Cummins-powered truck with optimum fuel mileage in mind.
  2. Shift early if your truck has a manual transmission.
  3. Buy quality fuel for your Cummins.
  4. Replace your standard engine oil with a good synthetic.
  5. Purchase a power module designed for your Cummins diesel.

How many miles can a 12v Cummins go?

Cummins diesel engines typically have a range of 350,000 to 500,000 miles.

What year 5.9 Cummins is best?

1994-1998 2500 &amp
3500

As far as performance potential goes, it doesn’t get any better than the mechanical P7100 equipped versions of the 12-valve 5.9L Cummins. They’re simple, rock-solid reliable, and can easily tick off a half a million miles if properly maintained.

How much power can a 47RE handle?

A stock 47RE will only safely handle 100psi of fluid pressure, while a Racing Valve body from Power Driven Diesel can handle 225 to 250psi, and thus more than 1,200 horsepower output.

How much power can you get out of a 24v Cummins?

From the factory, the engines were rated at 235 hp and 460 lb-ft of torque. The high flowing aftermarket VP44 pumps are now almost capable of supporting 800-plus horsepower on straight No. 2 (No. 2 is in reference to using only pump fuel) and more than 1,000 horsepower with nitrous.

How much HP can a stock 5.9 Cummins handle?

The 5.9L inline-six mill’s factory rotating assembly from ’89 to ’02 is capable of handling 800 hp (1,400 to 1,600 lb-ft of torque) without breaking a sweat, and is often pushed into four-digit territory before aftermarket rods become a consideration.

What is high mileage on a Cummins diesel?

Like the Duramax, Cummins diesel engines can be expected to last a long time. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel.

What years did Dodge use the 24 valve Cummins?

5.9L Cummins ISB Specs

Engine: Cummins 5.9L ISB (commonly referred to as the “24 valve”)
Applications/Production Years: 1998.5 – 2007 Dodge Ram 2500/3500 pickups Various industrial, agricultural, and motorhome applications of similar period
Displacement: 359.02 CID (359 CID nominal), 5.88 liters (5.9 liters nominal)