Sometimes theory is neat, but sometimes it fails to describe what actually takes place. The theory of internal combustion engines falls into this category, especially with respect to the function of ...

Have you ever wondered if the parts you're using are the best ones for your application? We sure have, which is why we take advantage of any opportunity to test a variety of parts and pass along the ...

Sponsored Content. We may receive a commission on purchases made from links. The 6.7-liter Cummins turbodiesel inline-6 is one of the most widely used diesel engines out there. It has been fitted to ...

Internal combustion engines are fairly simply machines. When you break it down, they are nothing more than air pumps. When it comes to making horsepower and torque, the simple fact is the more air you ...

Your intake manifold. It takes in air and sends it to your engine's combustion chamber. This is basically the start of the combustion process. After all, you can't have combustion without air.

Given the amount of time and effort that goes into the design of a factory intake manifold, it's not surprising that it's sometimes difficult to improve upon the stock induction system. Stock ...

The intake manifold in a vehicle plays a critical role, distributing incoming air evenly to each cylinder of the engine. This essential component directly influences both engine performance and fuel ...

For more than four decades, Lingenfelter Performance Engineering has been churning out a slew of wild high-performance products, from engine upgrades, to parts, to crate engines. Now, the tuner is ...

Inline-sixes tend to have problems tied to their size and length, higher camshaft flex and torsion, uneven air/fuel ...