The Colt Cams C.849.H Stage 2 Camshaft is a drop-in replacement for your 2003-2010 Ford 6.0L & 6.4L Powerstroke engine. When the 6.0L and 6.4L Powerstroke engines were build, they were designed with heavy emissions controls in mind. Because of this, the factory camshaft is not designed to take full advantage of the airflow that the cylinder heads can produce. They are designed to reduce emissions by keeping some exhaust gas in the cylinders. This is one of the reasons it is so hard to spool up a non-vgt turbo on your Power Stroke. Colt Cams has worked with numerous performance shops over the years to perfect a suitable upgrade that not only performs better, but is reliable. These cams will help reduce EGT's (by getting the exhaust out of the cylinder and new air in), improve horsepower, improve the engine's performance throughout the entire rpm range (yes, you guessed it, by getting the exhaust out of the cylinder and new air in!) and can support up to 5,000 rpms. The Stage 2 camshaft is designed to take advantage of the lost opportunities the factory cam didn't seize. This NEW BILLET is a straight drop in camshaft with no modifications needed. It offers a smoother idle, quicker spool up (most noticeable with a non-VGT turbo), lower egt's and better torque and horsepower. Many report a slight fuel economy improvement as well! This camshaft was designed with durability in mind. This cam is a great option from your standard work truck, to those hauling loads daily, and even for your weekend warrior. It's a great option for all Powerstrokes except the most serious of competition vehicles.Â Features: Drop-In Replacement Not A Regrind - Brand New Billet! Increased Horsepower & TorqueÂ Warning: Even though this camshaft has been designed, built and tested as a drop-in replacement, clearances should still be checked! Not available for sale in the state of California Click here to read Emissions Notice.