We fixed and improved this old NASCAR Ford C3 engine. The engine had previously overheated and lost power, and the source of the problem was finally discovered through an oil sample analysis. Now that the engine has been fixed it produces 765 horsepower, an increase of 15 horsepower. Various modifications have been made to the engine, including the use of a twin blade carburetor and a more powerful fuel. The engine now makes 791 horsepower, which is 100 more than it had 20 years ago.