Engine Masters

The crew checks out how cylinder heads affect horsepower under boost.

Tests with 87, 91, 110, 116 and E85 check octane's effect on power.

The guys put a blow-through carb up against a throttle-body-style EFI.

The guys test mandrel-bent exhaust against what the local shop bends up.

The crew tests 10 different filters in a hunt for the best units available.

The guys test five carb hats and see how orientation affects performance.

The guys test roots blowers, tunnel ram and intercoolers on a big block.

Does port matching an intake manifold deliver enough bang for the buck?

The headers, intake and more from Freiburger's drag car are on the dyno.

Holley's smaller-bore 4150 takes on their bigger 4500 series Dominator.

The guys study different compression ratios on otherwise identical engines.

It's a battle between the iconic 440 Six Pack and the legendary 426 Hemi.

The guys demonstrate how improved airflow on a small motor equals pure RPM.

The guys put standard, high-volume and high-pressure oil pumps to the test.

The crew tries to find the right balance of decibel levels and performance.

It's a battle of price vs. power for street-centric wedge cylinder heads.

Individual runner systems look cool, but do they actually make more power?

The guys study the pros and cons of running different types of fuel.

The guys explore the cooling benefits of water-methanol injection.

The guys test air filter size, along with cold air system configuration.

Nitrous oxide provides a cheap, easy and effective way to boost an engine.

We explore the differences between single and split-duration camshafts.

We test out a Mopar V8 with different manifolds, throttle bodies and more.

The guys see how flopping a piston's orientation affects performance.

The guys explain what valve float is and how to solve it.