What valve adjustment really means, and when to worry about it

At the end of the day, an internal combustion engine is just an air pump. Proper airflow in and out of the engine is thus ...
Motor Trend

C&L Performance Three-Valve Intake Manifold Upgrade

We Get Our Hands On One Of The First C&L Performance Three-Valve Intake Manifolds--It Added 27 RWHP. The company is long known for its MAF sensors and high-quality cold-air intake kits, so some might ...
GM Authority

GM Gen. 5 Small Block Deep Dive Part II: The LT1 Valvetrain, Intake, Exhaust And Cylinder Heads

For Part I, covering the new combustion system, direct injection, and active fuel management: click here. For Part III, covering the block, crankshaft and lubrication systems: click here. Continuing ...
Motor Trend

Adjusting the Valves on a 24-Valve Cummins - Lashed Out

While many folks view diesel engines as indestructible, they do still need maintenance. Oil changes, fuel filter replacement, and cleaning or changing the air filter are all important items when it ...
Hot Rod

Camshaft Selection by Horsepower Range

Engine builders explain how camshaft specs relate to horsepower targets, airflow, and rpm in LS, Coyote, Hemi, and ...