1. Camshaft Specs Explained

David Freiburger explains cam lift, duration, love separation angle and installe... More

2. Ultimate Horsepower-Killing Fans!

The guys bolt four different types of cooling fans onto their 350 small-block Chevy.

3. DIY Cylinder Head Porting Gains 92 Horsepower!

Steve Dulcich is not just the guy in the back of the dyno room, he's a legit eng... More

4. Straight Exhaust vs. H-Pipe vs. X-Pipe!

The guys test the power of using various pipes on a straight dual exhaust.

5. Powerstroke Turbo on a Ford 5.0!

David Freiburger pulls the engine out of the Rotsun 240Z and puts it on the engi... More

6. Best Cheap Chevy 350 Mods -- Dyno-Proven!

The guys determine what budget bolt-ons can be used on a small block Chevy 5.7 t... More

7. Supercharger Tuning and Proven Power!

The guys show how to install and tune a blower and dual double pumpers on a budg... More

8. How Much Boost Can a Stock Engine Take?

The guys strap a ProCharger centrifugal supercharger to a bone-stock Chevy 350 b... More

9. Air Filter Horsepower Shootout!

The guys test a whopping 19 different combinations of filter sizes and styles.

10. Cylinder Head Games–How Big Is Too Big

The guys test the internet theory that too big of an intake port kills bottom-en... More

11. Do Roller Rocker Arms Add Horsepower?

The guys reveal the facts and myths around horsepower claims and discuss purchas... More