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#gto horsepower

1972 GTO 400 engine bay dyno test
Car Features

Gross vs Net Horsepower: Why 1972 GTOs Look Weaker on Paper

Dan Reeves · · 6 min
Lineup of Pontiac GTOs by model year at dealership
Car Features

GTO Horsepower by Year: The Real Numbers

Tom Ramirez · · 7 min
1970 GTO 455 on auction showroom floor
Car Features

The 455 HO vs the 400: Which Pontiac Big-Block Is Better

Dan Reeves · · 6 min
1967 GTO 400 engine bay four-barrel carburetor
Car Features

1967 GTO: 400 Cubic Inches and the End of Tri-Power

Dan Reeves · · 6 min
1969 GTO 400 Ram Air engine bay
Car Features

The Pontiac 400: The GTO's Long-Serving Workhorse

Dan Reeves · · 7 min