One of the key components to the development of the modern Prevailing Wage was the Davis-Bacon Act of 1931, a federal law which mandated that all laborers, contractors and subcontractors be paid a Prevailing Wage for all public works projects in excess of $2,000.
Suffix Portion of Chevy Engine Code. Suffix codes are either alphabetical or alphanumeric. Select the portion of the alphabet for your code. For example, select DTR-HQ if you'd like to find code DZ.
The prefix portion of the ID code tells you the engine assembly plant code, and the engine's assembly date (for example, 0701 = July 1st....no year is indicated). The suffix portion tells you the original application, vehicle model, engine RPO/ transmission / horsepower, etc...