What Cummins Block Is Bad?

Are 12 valve Cummins reliable?

The Cummins 12-valve is hilariously simple and reliable, but what puts it over the top as the greatest diesel pickup truck motor of all time is how easily it can be modified to produce hilarious power numbers..

What year Dodge Cummins is best?

1989-1993 Dodge Ram 2500 and 3500 – Timeless Diesel. … 2003-2008 Dodge Ram 2500 and 3500 Heavy Duty – Best Used Diesel Value. … 2010-2013 Ram 2500 Heavy Duty – Most Capable Diesel. … 1999-2003 Super Duty – Best Budget Diesel. … 2008-2010 Super Duty – Best Diesel to Modify.More items…•

How many MPG does a 5.9 Cummins get?

29 MPGWe own five Dodge 4×4 pickups with the 5.9L Cummins, and we are thrilled with all the trucks. 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. We only drive Cummins 5.9L, and we could not be happier with the superior performance!

How much HP can a stock Cummins handle?

The forged steel connecting rod found in ’89-02 5.9L Cummins mills is stout to say the least. They’re known to be capable of handling in excess of 1,000 hp at near-stock compression ratios before bending, and we’ve even seen the block split before the rods failed in several engines.

How long can a 5.9 Cummins last?

The longevity of a cummins depends on preventive maintenance. The more you take care of it the longer it will last. They hold power well and if monitored properly will last longer than you will. Average mileage is between 17-22 depending on configuration and how you drive.

When did they stop making 5.9 Cummins?

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. Cummins made a displacement change in 2007.5 to the 6.7l Cummins diesel.

What’s wrong with a 53 block Cummins?

The # 53 block casting has inherently thin water jacket walls that are susceptible to cracking. Frequent and/or heavy towing, failing to let an engine properly warm after a cold start, and engine overheating can contribute to the development and propagation of cracks in the water jackets of these engine blocks.

Are all 5.9 Cummins blocks the same?

From ’94-’97, all 5.9L Cummins engines shared the same cast-iron block, crankshaft, main cap bolts and cylinder head found on the ’89-’93 mills. … 14mm bolts on ’89-’97 engines), all late model 12-valves were equipped with the smaller diameter fasteners.

What is high mileage for a Cummins diesel?

If your Cummins-powered RAM, TITAN XD pickup, Cummins Repower, or other Cummins powered vehicle has surpassed the 100,000-mile mark, we’d be honored to have you in the Cummins High Mileage Club.

Is Cummins the best diesel engine?

A Cummins diesel engine is recognized around the world as a superior truck engine not only because a Cummins engine will have the horsepower and torque a work truck needs to tow a hefty load, but these engines are also noted for unmatched durability.

Is 24v better than 12v Cummins?

12V- More reliable injection pump, no electronics, better lift pump, quieter, easy to modify. 24V- Slightly more power stock, ability to be chipped, rear doors on quad cabs, rear discs(not a problem for all 12vers). One thing to keep in mind is age.

How long can a Cummins engine last?

So, the general consensus seems that a Cummins engine’s life expectancy is from 300k-400k miles, but if you follow the correct steps, you could, and should have some sort of control over the life span of your engine, and we don’t think crossing your fingers will really suffice.

Is 5.9 or 6.7 Cummins better?

Thanks to its increased stroke over the 5.9L (4.88 inches vs. 4.72 inches), the 6.7L makes considerably more torque at low rpm, especially when combined with the aforementioned quick-lighting variable geometry turbocharger.

How much power can you get out of a 12 valve Cummins?

Photo 18/18 | Without turning up the air (with a bigger turbo) or fuel (injectors), we didn’t expect record gains from the Dodge Ram’s 5.9L 12-valve Cummins engine. Still, the basic-upgraded powerplant managed to generate 200 hp, which is impressive, given its 215 flywheel-horsepower rating from the factory.

Who owns Cummins now?

The answer is no, Ford never owned Cummins and it doesn’t own it today either. It is a myth and has its own little story of why this rumor started going around. However, the people said that it could be true because Ford Motor Company had bought 10.8% shares of the diesel engine manufacturer back in 1990.

Is Duramax better than Cummins?

Their high horsepower and torque outputs directly compete with Cummins engines, as well as PowerStroke. In addition to durability, Duramax engines are known for their quiet performance. The Duramax LP5 in particular is 38% quieter than previous versions.

Are Dodge Cummins reliable?

But seriously, the cummins engine itself is probably one of the most reliable diesels you can buy. The main issues with a cummins truck is the transmissions, especially the automatics in 3rd gens.