Small Block Chevy Firing Order – Understanding the Basics for Optimal Engine Performance

As a car enthusiast or mechanic, understanding the firing order of an engine is crucial in getting the best performance from your vehicle. The small block Chevy firing order is a combination of the sequence in which the spark plugs fire in the engine. This sequence plays a vital role in determining engine power output, fuel consumption, and overall engine performance.

So, let’s dive into the basics of small block Chevy firing order!

What is a Firing Order?

A firing order is a specific sequence in which the engine’s spark plug ignites the fuel in each cylinder. It is crucial to the smooth and efficient operation of the engine. If the firing order is off or incorrect, it can lead to engine misfires, poor fuel economy, and even damage to the engine.

The Small Block Chevy Firing Order

The small block Chevy engine is a popular engine used in various GM/Chevrolet vehicles. The firing order of most small block Chevy engines is 1-8-4-3-6-5-7-2. The number one cylinder is usually located at the front of the engine on the driver’s side. The firing order starts from the number one cylinder and follows this order counterclockwise around the engine block.

Why is Firing Order Important?

The firing order is essential for the smooth running of the engine. If the firing order is incorrect or disrupted in any way, it can cause problems and affect engine performance. Here are some of the reasons why the firing order is crucial:

1. Engine Misfires

If the firing order is wrong or out of sync, it can cause engine misfires, which can lead to a decrease in engine power, a rough idle, or even stalling.

2. Fuel Economy

The firing order plays a vital role in fuel economy. If the engine’s firing order is incorrect, it may consume more fuel, leading to poor fuel economy.

3. Engine Longevity

Correct firing order can help extend the life of the engine. Properly ignited fuel in the cylinders will prevent excess wear and tear on the engine, increasing its life.


Now that we have discussed the basics of small block Chevy firing order and its importance in engine performance, it is essential to understand how to ensure correct firing order for your engine. It’s advisable to consult the manufacturer’s manual or an experienced mechanic to get the proper settings for the small block Chevy engine. Correcting the firing order issues can lead to optimal engine performance, fuel economy, and engine longevity.

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