Stock FAQs

how much hp can i make on stock fuel cummins

by Austyn Gislason Published 3 years ago Updated 2 years ago
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Full Answer

How much HP can a fuel pump handle?

It installs as a direct replacement to the stock pump and sending unit but has two electric fuel pumps mounted in the bucket. It will flow enough to support 800 horsepower, and will even work with a dual CP3 configuration, but the best part is since the fuel pump sits inside the tank, it requires no drilling to sump the tank, and its very quiet.

How much horsepower does a 12-valve diesel engine add?

When it comes to adding power, the stock internals are way overbuilt for how much power they came with, and it’s not uncommon to make 700 horsepower or more on the stock pistons, rods, and crank. If you show up at a diesel event today, you’re guaranteed to find at least a couple of old 12-valves still spooling their turbos.

How do I get my Cummins to 500rwhp?

Getting to the 500rwhp mark requires zero upgrades in the 12-valve Cummins’ rotating assembly, but before you get started stacking horsepower on top of it it’s best to address any issues. You may even need to entertain a re-seal (these things can leak with age) or a compression test before you let the games begin.

How much horsepower does a diesel truck really have?

20 years ago, making 500 horsepower at the wheels was a huge deal in the diesel world. Today, it’s essentially what every mildly-tuned late-model truck makes.

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How much HP can a stock 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.

How much HP can a stock 6.7 Cummins handle?

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.

How much HP can stock 5.9 Cummins injectors handle?

roughly 500rwhpTo stand up to the kind of power the '03-'07 5.9L Cummins' stock turbo and injection system can support (again, roughly 500rwhp), several reinforcements are in store for the 48RE.

How much HP can a stock 24v Cummins handle?

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.

How do I get more horsepower on my 6.7 Cummins?

Tunes primarily improve power by increasing turbo boost levels. When running higher boost levels bringing more air into the engine is necessary to reduce stress on the turbo and improve its ability to spool quickly. Therefore, we recommend going with a performance intake system to increase airflow into the engine.

How much HP does EFI Live add to 6.7 Cummins?

130+ HPGain 130+ HP over stock, tow your toys effortlessly, and rapidly increase acceleration. Tuning engineered for optimal efficiency. This tuning package can only be installed using an EFILive AutoCal V2, FlashScan V2 or AutoCal V3.

How much HP is 30 over injectors?

30% Overs are a nice performance upgrade to increase your horsepower. This 30% Over injector equates to approximately 50 HP. When tuned properly, this will help your fuel economy and throttle response with clean smoke.

How much HP does a stock 5.9 Cummins have?

325hpThe common-rail 5.9L Cummins was produced from 2003-2007 and featured a fixed-geometry turbo. It put out 325hp and 610 lb-ft of torque by the end of its run, along with 359 ci of displacement coming from a bore of 4.02 in and stroke of 4.72 in.

How can I get more horsepower out of my 5.9 Cummins?

2:1913:15TOP 5 UPGRADES FOR 5.9 CUMMINS - YouTubeYouTubeStart of suggested clipEnd of suggested clipI run an oiled filter this one's pretty much ready for cleaning uh it's not too bad but uh yeah thisMoreI run an oiled filter this one's pretty much ready for cleaning uh it's not too bad but uh yeah this is just gonna get you a lot better air flow.

Is 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.

Are 24v 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 much horsepower can you get out of a 12-valve Cummins?

Though it's quite restrictive, the factory cast-iron 12-valve cylinder head will allow you to reach 500 hp, but that aged head gasket might not live at 35-45 psi of boost.

Can you put fuel in a turbo without air?

fuel input isnt anything without the air to light it up. If you dont have the big enough turbo to push enough air all your doing is "putting the fire out" in the cylinders and dropping your power

Can you put HP on CC?

You cant really put a HP # on a CC of fuel since you will almost never be able to burn every ounce of fuel that your pump is putting out.

How much horsepower does a Cummins 6.7 have?

Starting in 2003, the standard output 5.9 liter common-rail Cummins produced 235hp and 460lb.ft. of torque, and the high-output version of the same year made 305hp and 555lb.ft. Halfway through 2007, the larger 6.7 liter model was released which was rated at 350hp, and brand new 2019 models are available with 400 horsepower and 1,000 pounds of torque, which makes Ram the first automaker to release a pickup truck with a four digit torque rating. If you want to move Mt. Rushmore on the back of your gooseneck, the Ram will get the job done. But if you want to go fast, you need to bump those numbers a bit further.

What is needed after stage 1?

One accessory I consider to be necessary after stage one is a good set of gauges, with the two most important being a pyrometer and a boost gauge, as they are the best indicator of the health of your engine, and they give you a warning to take your foot off the accelerator if things get too hot.

What are the parts of stage 2 Cummins?

The parts for stage two are broken up into two separate categories: parts that support power and keep the engine together, and parts that add power through increased airflow. As a precautionary measure, I always recommend the “safety” parts first, which means its time to pull the valve cover off and take advantage of how easy it is to work on a Cummins. At a stock or mildly tuned power level the factory head bolts work great, but since it’s so easy for a Cummins to make a ton of horsepower and boost, the stock bolts will run out of strength, which is why it’s very common to see a tuned Cummins with a blown head gasket. To prevent that from happening, its necessary to swap out the head bolts with a stronger fastener, and the industry standard is a set of ARP Head studs. For most street trucks making under 800hp, the ARP2000 (rated at 220,000 psi tensile strength) studs will work great. For higher power levels, you should step up to the CA625 material. This does represent a pretty steep price jump, but the fasteners are rated at a much higher at 260,000 to 280,000 psi. After all, if your combustion pressure isn’t sealed inside the engine, you’re not going anywhere.

What is a Hamilton valve spring?

When it comes to valve springs, Hamilton is a household name in the diesel industry. The valve spring is responsible for closing the valve, but it also has to push a rocker bridge, rocker arm, pushrod, and a tappet back down to the base circle of cam.

Can a turbo have a dry filter?

Plus, you can select a reusable oiled filter, or a dry filter if you prefer.

Do turbos need restriction?

A turbo does not need any restriction, in fact, the less restriction the better. The main tradeoff between the two sizes is sound, and the total amount of power it can support. If you plan on making anything less than 600 horsepower, a 4-inch exhaust will be adequate.

Can you run a 5 inch truck?

However, if you want to run a 5-incher on your near stock truck, there’s no reason you can’t. Just be prepared for a little more up-front cost, a little more weight, and some more noise. Either size you choose will result in an increase in power, lower EGT, and an increase in fuel mileage.

How much horsepower does a Cummins 6BT have?

When they left the factory, the 6BT had a horsepower rating somewhere between 160 and 215 horsepower, and the torque figures came in between 400 and 440 lb.ft. While that’s pretty dismal by today’s standards considering the 2019 HO Cummins is rated at 1,000lb.ft., ...

What engine did Dodge use in 1998?

The 5.9 now had 24 valves and fueling was controlled by the electronic Bosch VP44 injection pump and a computer mounted to the side of the block. This new pump had the ability to dynamically vary injection timing for a wider torque curve and was the grandfather to modern common-rail injection. From a performance standpoint, this delivered more flexibility for tuning, and higher initial power gains before you needed to touch a wrench, however, from an all-out racing standpoint, the earlier P7100 pump still holds the crown.

What is the difference between a P7100 and VP44?

With a P7100, there are many user serviceable parts which can be changed to add horsepower, but on the VP44, there’s nothing you can easily swap out to add power.

What turbo does the Killer B use?

The Killer B utilizes one of the highly acclaimed Borg Warner SX-E turbos featuring a 61mm compressor wheel for a super quick spool up. Along with the larger turbocharger, it will be wise to change a few more parts on the airflow side, starting with the intercooler and then moving along to the intake horn.

What is Smarty S03?

The Smarty S03 is a flash programmer and is great place to start. It can get inside the computer and modify the calibration for fueling and boost, and you can customize the settings to suit your tastes with 10 different levels from daily driving, to fuel mileage, to all out performance.

What does an aftermarket cam do?

It’s responsible for opening and closing the valves at the correct time, and an aftermarket cam will hold the valves open longer and open them further, letting more air into the engine, and adding more power. The same holds true with a diesel engine, especially the 12-valve.

How much RPM does a stock spring defuel?

The stock spring will defuel the truck around 2,700 RPM which puts the engine way below its peak power after a gear shift, so the higher RPM springs will help keep the engine where it wants to be.

How fast is a Bosch P7100?

From the factory, the Bosch P7100 in ’94-98 Ram applications is governed at roughly 2,700 rpm. Worse yet, defueling can start as early as 2,400 rpm. To force the P-pump to fuel to higher rpm and to effectively extend the horsepower curve, higher rpm governor springs are mandatory. Most aftermarket governor spring kits come with both the 3,000-rpm and the 4,000 rpm springs. It’s up to you to decide how fast you want your Cummins to spin. If you plan to upgrade valve springs, which we’ll recommend below, it will pay to install the 4,000-rpm springs.

How many rpm springs are in a Cummins aftermarket?

Most aftermarket governor spring kits come with both the 3,000-rpm and the 4,000 rpm springs. It’s up to you to decide how fast you want your Cummins to spin. If you plan to upgrade valve springs, which we’ll recommend below, it will pay to install the 4,000- rpm springs.

What is stiffer valve spring?

And with elevated boost and drive pressure in the mix there is a higher potential for valve creep. To keep the intake and exhaust valves closed when they should be, stiffer valve springs are highly recommended.

Is AFC Live mandatory?

To well-educated Cummins guys, AFC Live might not be mandatory, but it sure makes life easier. One mod that is mandatory is a timing increase for the P7100. From the factory, most are set with roughly 12-degrees of advancement. Bumping things up to 18-21 degrees makes a considerable difference in power output.

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