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#gto engines

Lineup of Pontiac GTOs by model year at dealership
Car Features

GTO Horsepower by Year: The Real Numbers

Tom Ramirez · · 7 min
1971 Pontiac 455 HO big-block engine detail
Car Features

The 455 HO: The Last Great Pontiac Big-Block

Dan Reeves · · 6 min
1971 GTO 455 engine bay close-up
Car Features

1971 GTO: The Compression Drop and the Beginning of the End

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