To find the correct firing order for *your* 327, you need to know more specifics:
* Year: The year the engine was manufactured.
* Application: What vehicle was it in? (e.g., Chevrolet Impala, Corvette, etc.)
Once you have this information, you can:
1. Consult a Chevrolet repair manual: A factory service manual for the specific year and model of your vehicle will definitively state the firing order. These are available online (often as PDFs) or from automotive parts stores.
2. Use an online resource: Many websites specializing in classic Chevrolet parts or engine information have databases that let you search by year and engine code. Try searching for "[Year] Chevrolet 327 firing order" on Google or a similar search engine.
3. Check the engine itself: Sometimes, the firing order is stamped on a part of the engine block or valve cover, though this is not always the case.
Caution: Don't rely on a picture found generally online without verifying it against a reputable source specific to your engine's details. Using the wrong firing order can damage your engine.