How to Identify a Chevy Big Block Engine
- 1). Move the vehicle into an area where you can access the engine in strong light, such as a garage.
- 2). Open the hood of the vehicle and set the support rod.
- 3). Determine if there is an engine code stamped above the timing chain cover. This is the standard location for the engine code on a big block engine.
- 4). Find the location of the engine suffix code that is stamped on the engine. Look on the block pad in front of the cylinder head on the passenger side of the block. The engine suffix code is the last 2 or 3 digits at the end of the code. Compare the number to the chart on the chevy-camaro.com website.
- 5). Find the location of the engine block casting code or number. This code can be found at the rear of the engine block on the top of the bell housing flange on the driver's side of the vehicle. On older big block engines the casting number can be found on the passenger side of the engine. Compare the number to the chart on the chevy-camaro.com website.
- 6). Look on the top of the cylinder head, between the valves and rocker arm studs, if you have a Chevy Camaro. Write down the casting code for the cylinder head. Compare the number to the chart on the chevy-camaro.com website.