Forgotten Diesels provides detailed specifications, history, & information on the following diesel engines: 6.2 & 6.5 L GM, 5.7 L Olds diesel, 6.9 & 7.3 L IDI (pre-powerstroke), & 5.9 L Cummins 12-valve. - (Read more)

Get more performance from your Cummins, Power Stroke, or Duramax diesel. The Diesel Performance Database is your diesel performance guide, with loads of information on performance enhancing modifications & techniques. - (Read more)

Big3Diesel.com is your source for Ford, Chevy, & Dodge diesel comparisons. Comparisons include the 6.0L & 7.3L Ford Power Stroke diesels, 5.9 & 6.7L Cummins, and all 4 generations of the 6.6L Duramax. Learn about what makes these diesels roar, compare brands, and learn how the competition stacks up. - (Read more)