What are the tune up specifications for 1969 Pontiac 400 engine?

For a 1969 Pontiac 400 engine, the standard tune-up specifications typically include a spark plug gap of 0.035 inches, ignition timing set at 4 degrees BTDC (before top dead center) at idle for models with automatic transmissions, and 8 degrees BTDC for manual transmissions. The idle speed should be around 600 RPM for automatic and 800 RPM for manual transmissions. Additionally, the points gap should be set to 0.019 inches if equipped with a points ignition system. Always consult the specific service manual for detailed specifications, as they may vary slightly based on the model and configuration.