What is timing specs on 1984 gmc vandura?

The timing specifications for a 1984 GMC Vandura typically depend on the engine type. For the most common engines, such as the 5.0L (305 cubic inch) and 5.7L (350 cubic inch) V8s, the initial ignition timing is generally set between 4 to 10 degrees before top dead center (BTDC). It's essential to check the specific engine model and any relevant service manual for precise timing settings, as they can vary based on factors like emissions equipment and engine condition. Proper timing is crucial for optimal engine performance and fuel efficiency.