Quick Answer

You Asked 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 much HP can a 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.

Is a 12 valve Cummins better than a 24 valve?

12v vs 24v Tuning &amp
Aftermarket Potential

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. P7100 injection pumps on the 6BT are easier to mod and support the extra power.

How much is a 12v Cummins Engine worth?

How Much Does A 12V Cummins Swap Cost? Diesel Cummins conversions can vary widely, often reaching $5,000-$10,500 each.

How reliable is a 12v Cummins?

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.

What year 12v Cummins is best?

Among its strong suits are

  • P7100 (The Holy Grail) While the 12-valve was built from 1989 to 1998, most people look for the 1994-98 model.
  • Affordable Injector Upgrades.
  • Simple Designs.
  • HX35:
  • Free Horsepower.

How fast is a stock 12 valve Cummins?

Registered. Mine is about 120 mph.

What will 4k governor springs do for my 12v Cummins?

The Industrial Injection 4000 Governor Spring Kit is by far the best modification you will ever do to your 12 valve Cummins engine. The factory governor generally will slowly start to defuel the engine around 2300-2400 rpm and drastically decrease performance and pulling power.

How much power 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.

Are 5.9 Cummins reliable?

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.

Are 12v and 24v blocks the same?

Minor difference, but different none the less.

Is a 5.9 Cummins a V8 or v6?

Dodge Ram Cummins 5.9l 6.7l diesel engine specs have changed a lot from 1989 to 2017. The Cummins corporation actually made the engines for the Chrysler corporation bda Dodge and Ram companies. All these Cummins diesel engines are inline 6 cylinders.

How much does it cost to 12 valve swap?

Going the 12-valve, 5R110 route can be pulled off for $12,000 to $15,000 at a shop that’s seasoned in Cummins swaps. Sprinkle in a little more power and the cost obviously goes up, but for a basic, 350hp (ish) 5.9L-powered ’03-’10 Super Duty you’ll get a Cummins repower that’s cleanly done and rock-solid reliable.

What is a 7.3 Powerstroke?

The 7.3L Powerstroke is one of the most reliable Diesel engines ever produced. It’s so reliable even die-hard Cummins and Duramax enthusiasts acknowledge it’s widespread success. This makes them one of the most sought after diesels today.

What Cummins Engine is best for swap?

Those looking to perform a Cummins diesel conversion often stick with the 5.9 L Cummins motor found in trucks from 1989-2007 as they feature reliability, power, fuel economy, and simplicity. Arguably, they have been proven to be the best diesel motor to swap into most any application.

How many miles can a 12v Cummins go?

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

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.

Is a 12 valve Cummins a V8?

The Cummins engine had been successful in agriculture implements for a few years prior, so in 1989 Cummins and Chrysler introduced the 12 valve as an alternative the the V8 gas powered Dodge. It was a hit immediately for those that wanted double the torque and a better option for fuel economy.

What transmission does a 12V Cummins have?

1st Gen 12 Valve 5.9L Cummins Specs

1st Gen 5.9L Cummins Years: 1989-1993
Valvetrain: Overhead Valve Engine (OHV) 2 Valves Per Cylinder
Pistons: Cast Aluminum
Transmissions – Getrag 360 5-Speed Manual – Torqueflite A727 3-Speed Automatic – A518 (46RH) 4-Speed Automatic Transmission with overdrive

Can you put a Allison Transmission on a 12V Cummins?

CUSTOM AUTOMATIC CONVERSIONS, (CAC) NOW OFFERS COMPLETE KITS SO THAT AN ALLISON 5 OR 6 SPEED AUTOMATIC TRANSMISSION CAN BE INSTALLED BEHIND THE CUMMINS 12 VALVE, 24 VALVE, 5.9L AND 6.7L ENGINE.

How much does a 5.9 12 valve Cummins weigh?

How Much Does A 12 Valve Cummins Engine Weight?

Engine: Cummins 5.9L ISB (commonly referred to as the “24 valve”)
Horsepower: 235 – 325 hp @ 2,900 RPM
Torque: 460 – 610 lb-ft @ 1,600 RPM
Governed Speed: 3,200 RPM
Engine Weight: ~ 1,150 lbs, dry & dressed

When did Cummins stop making 12 valve?

The term 2nd generation Cummins refers to Dodge diesel pickups between 1994-2002. There are two variations of the 2nd gen Cummins though. 1994-1998 trucks feature 12 valves and are very similar to the previous trucks engines.

How do you do governor springs on a 12 valve Cummins?

How to Install Governor Springs in a Cummins | Power Driven Diesel

How do I install governor Springs?

How to Install Cummins Governor Springs

  1. Remove battery cable, horn, shutdown solenoid, and actuator arm.
  2. Remove old governor springs (Leave large outer spring in place)
  3. Install new governor springs (Install them as a single unit for ease)
  4. Repeat for second set of springs and reassemble engine parts.

What do 4K Gov springs do?

These governor springs will allow higher rpm and more power in your p-pump truck. For a 3K kit remove the center spring or leave it in for a 4K kit.

How much boost does a stock 5.9 Cummins make?

On 1998.5-2004 5.9L Cummins you will need to physically modify your wastegate to gain more turbo boost. Doing this without the Boost Fooler will result in check engine lights and codes set into the computer. Stock 98-04 trucks should generate 18-23psi of boost pressure stock (depending on year model).

What is the strongest Cummins Engine?

The new 4000 hp QSK95 is the highest horsepower diesel engine ever developed by Cummins. With an output of 4000 hp and more, Cummins’ new QSK95 is the world’s most powerful high-speed diesel engine.

How much HP can a 7.3 Powerstroke handle?

The 7.3 Powerstroke is a two-valve behemoth which measures in at 444 cubic inches and has a maximum stock power rating of 275hp and 525lb.