* Year of manufacture: Different years have different recommended specifications.
* Engine modifications: Cam shaft type, compression ratio, fuel type, etc. all influence timing.
* Intended use: High performance engines require different timing than stock engines.
Here's how to find the correct timing:
1. Consult your owner's manual: The best source for your specific engine is the factory service manual.
2. Look at the engine tag: The engine tag may have a "timing" specification, usually expressed in degrees BTDC (Before Top Dead Center).
3. Use a timing light: A timing light is a tool that connects to your spark plug wires and allows you to see the timing marks on your engine. You'll need to adjust the distributor until the timing mark aligns with the pointer on the timing cover.
General timing ranges for a stock Chevrolet 350:
* Initial timing: 6° to 12° BTDC
* Total timing: 34° to 38° BTDC
Important notes:
* Always check the timing specification for your specific engine.
* Never change the timing without a timing light and a thorough understanding of the process.
* Incorrect timing can lead to engine damage.
If you're not comfortable adjusting the timing yourself, consult a qualified mechanic.
