Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A.Most stock cylinder heads have factory-cut undercuts of the type ...

QUESTIONI am building a budget 1935 Ford truck rat rod and wondered if you could help with some basic engine mods. I have a complete running 1973 big-block Chevy truck chassis with all the components.

Mazda Motor Corporation is the company making the claim, saying it’s done it with the SkyActiv-D engine, an innovative powerplant that efficiently operates on only a 14:1 ratio (diesel manufacturers ...