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#gross horsepower

1970 Dodge Charger R/T 426 Hemi engine bay, an engine famous for its gross versus net horsepower gap
Car Features

Gross vs Net Horsepower Explained

Dan Reeves · · 6 min
1966 GTO 389 Tri-Power engine bay closeup
Car Features

Pontiac GTO Engines: From 389 Tri-Power to Ram Air IV and 455

Dan Reeves · · 10 min
A 1970 Mercury Cyclone Spoiler engine bay showing its 429 Cobra Jet big-block from the horsepower wars.
History & Heritage

The Horsepower Wars: How Detroit Escalated

Mike Sullivan · · 6 min
1972 AMC Javelin AMX muscle car from the year horsepower ratings collapsed
History & Heritage

Why Horsepower Numbers Collapsed in 1972

Mike Sullivan · · 6 min