Quick Answer

Frequent Question 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.

What year 12v Cummins is best?

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.

How much horsepower can a 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 much horsepower does a 12 valve Cummins put out?

The Cummins 5.9-liter 6BT 12 valve has 230 HP, 440 lb-ft of torque, and a P7100 inline injection pump right out of the box. The 12-valve is also a popular engine swap choice, powering a slew of Jeep, rat rod, muscle car, and dragster projects.

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.

How fast is a stock 12-valve Cummins?

Registered. Mine is about 120 mph.

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.

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 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 5.9 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.

How much HP does a stock 5.9 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. Cummins made a displacement change in 2007.5 to the 6.7l Cummins diesel.

How much boost can a 12 valve Cummins hold?

Yes, the rule of thumb is 40-50 psi of boost, but that’s more because of the increased drive pressures associated with more boost.

Is 24v better than 12v Cummins?

In summary, those looking to keep things stock or modest the 24v is the better street engine. If you’re looking for extreme power and performance the older 12v Cummins engine is likely the better choice.

Is 12 valve or 24 valve Cummins better?

The 12 Valve engine is hands down more reliable than the 24 Valve. Even guys who have spent the money to get an aftermarket lift pump (a must with a 24 Valve, along with a fuel pressure gauge) have gone through multiple pumps.

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 do you get 500hp out of a 7.3 Powerstroke?

Aside from adding a chip, a considerable up-sizing of the fuel injectors is mandatory to get any kind of measurable horsepower out of a 7.3L Power Stroke. For us, the only option is to upgrade to a set of hybrid injectors, and specifically the 238cc version for 500hp goals.

How much HP does a 7.3 Idi have?

7.3L IDI Specs

Engine: International/Navistar 7.3L IDI V-8 diesel
Valvetrain: 2 valves per cylinder, standard OHV, standard camshaft in block
Peak Horsepower: 185 hp @ 3,000 rpm (naturally aspirated) 190 hp @ 3,000 rpm (turbocharged)
Peak Torque: 338 lb-ft @ 1,400 rpm (naturally aspirated) 388 lb-ft @ 1,400 rpm (turbocharged)

How much boost can a stock 7.3 turbo handle?

‘94.5-’99 7.3L: 380 to 400rwhp

Either charger can hold up to 30-35 psi of boost for a while, but 40 psi or more is asking a lot for a turbo that was originally intended to see a maximum of 17 to 23 psi.

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 does a Cummins 12 valve weigh?

9 12 Valve Cummins Engine Weigh?

Engine: Cummins 6BT (commonly referred to as the “12 valve Cummins”)
Horsepower: 160 – 215 HP @ 2,500 RPM
Torque: 400 – 440 lb-ft @ 1,600 RPM
Governed Speed: ~ 2,700 RPM
Engine Weight: ~ 1,100 lbs, dry & dressed (~ 890 lbs dry, engine assembly only)

How do you adjust a 12 valve Cummins?

How to tune a 12 valve Cummins

How long will 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.

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.

How long can a 12 valve Cummins last?

Cummins diesel engines can last a long time, as with Duramax engines. Cummins diesel engines typically have a range of 350,000 to 500,000 miles.

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.

How much does it cost to rebuild a Cummins engine?

The average cost of a rebuilt Cummins ISX diesel engine is $11,250 before labor or parts kits. By comparison, a Cummins ISX in-frame kit is about $3,189.

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.