Late-model engine designs have come a long way in the engineering of pistons and cylinder heads to improve combustion efficiency, allowing higher-compression engines to run on regular gas.

There is easy power to be had in an LS V-8 engine with some simple combustion chamber work you can do at home.

Knowing how compression ratios are calculated and work can lead to more horsepower on the track and more appearances in victory lane. Find all the details inside Circle Track Magazine.

HCCI engines are promising because, like diesels, they run on a leaner mixture of air-to-fuel, using less gas, and they use very high compression ratios, which also improve efficiency.

If you're confused when it comes to truck engines, torque vs horsepower, and engine parts that will increase horsepower- this is the article for you! We go over a few performance parts to increase ...