Tonawanda Engine is a General Motors engine factory in Buffalo, New York. The plant consists of three facilities totaling 3.1 million square feet (290,000 m²) and sits upon 190 acres (77 ha). The factory receives cast engine blocks from Defiance Foundry in Defiance, Ohio and Saginaw Metal Casting Operations in Saginaw, Michigan, and received engine block castings and cylinder heads from the former Massena Castings Plant in Massena, New York.

The campus houses three different engine plants. Plant #1, located at 2995 River Road in Buffalo, was built in 1938; Plant #4, located at 2390 Kenmore Avenue, was built in 1941; and Plant #5, located at 240 Vulcan Street, was built in 2001.^[2]

• 2010 $425 million for the next Generation Ecotec 2.0:/2.5L
• 2010 $400 million for a new V8 small block engine

• Ecotec GenIII
  • 2.0L Turbo
  • 2.5L
• Small-Block Engine Gen V
  • 4.3L
  • 5.3L
  • 6.2L
  • 6.2L LT1 & LT4

Total engines produced since 1938 – 70,967,249

• Ward's Best Engines 2014 - 6.2L LT1 Small Block GenV^[3]
• Ward's Best Engines 2013 - 2.0L Turbo Ecotec GenII^[4]
• Ken-Ton Chamber of Commerce Green Globe Award for being a leader in Green Manufacturing, 2013
• EPA ENERGY STAR Challenge for Industry Recipient, 2010
• Certificate of Appreciation from WNY Chapter 77 Vietnam Veterans of American Chapter

• Hourly: 1,498
• Salary: 237
• Union Local: UAW Local 774

• List of GM factories