Chevy 350 Firing Order – (V8 Small Block & Big Block)

Find out the firing order for a chevy 350 engine. This includes both big block and small block engines. There are also some helpful tips on how to identify each cylinder

Chevy 350

Working on your four-cylinder car might have been a breeze, but dealing with a V8 can cause you to become overwhelmed very quickly.

The Chevy 350 is an intimidating small block engine if you’ve never worked on one before. To ensure that the motor works as intended, you must know the Chevy 350 firing order.

In this article, we look at the importance of the firing order. We also cover the Chevy small block firing order, as well as a couple of other configurations, for good measure.

What’s The Chevy 350 Firing Order?

The Chevy 350 small block firing order is 1-8-4-3-6-5-7-2. This order shows that cylinder #1 is going to fire off first. Once the first one is finished, cylinder #8 takes over and so on until cylinder #2 completes the ignition pattern. 

This small block engine is known as an SBC because it is smaller than the big block variants. It’s only 262 to 400 cubic inches versus the big block at 348 to 582 cubic inches. 

However, the firing orders of both the small and big block Chevy engines remain the same. With either one, the firing order is 1-8-4-3-6-5-7-2.

So, how do you know where each of these cylinders is located? Every manufacturer lays out the cylinders in a way that’s easy to determine. In Chevy 350 models, cylinders are numbered starting at the front of the engine, moving to the back, working from the driver’s side. The left-front cylinder is going to be #1. You can move back on the engine from left to right. Any odd numbers are located on the left of the motor, while the even numbers are found on the right-hand side. 

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What is Firing Order?

The motor’s firing order is the pre-determined sequence that each cylinder gets a spark from the ignition system. This spark is responsible for igniting the air-gas mixture. For the Chevy 350 to work correctly, the ignition must occur in a precise pattern. 

Considering the 350 is a V8 engine, you don’t want to have all eight cylinders firing at the same time. That’s where the timing and proper configuration come into play. While one cylinder is firing, the others are on a different stroke, working in sync. 

The more cylinders involved in an engine, such as the V8, the more coordinated this firing order becomes. It is precisely calibrated to ensure operation is smooth, vibrations are minimized and the engine remains balanced. Plus, the right firing order keeps the engine lasting as long as possible. 

If the firing order is wrong, the ride becomes more like a bucking bronco. It can’t be smooth unless you have it timed just right. It will also create lifelong damage to the engine, especially if left unchecked. 

Not every V8 engine has the same firing order. Each manufacturer designs its engine for a particular order, which is why it’s critical to know what your motor requires. Thankfully, it’s only eight cylinders laid out in a pattern, making it easy to remember for any future work you do. 

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Chevy Firing Order

It’s easy to figure out what the Chevy firing order is because many of them remain the same. We already know that the Chevy small block V8 runs at 1-8-4-3-6-5-7-2. The small block includes the 265, 283, 302, 327, 350 and 400.

We have also covered that the Chevy big block V8 also runs at 1-8-4-3-6-5-7-2. These engines include the 396, 406, 427 and 454. What’s different is the Chevy LS engine firing order. LS1 through LS7 engines don’t run at the same firing order as the small and big block Chevys. Instead, it runs at 1-8-7-2-6-5-4-3.

If you aren’t sure of your Chevy engine’s firing order, check the service manual. You don’t want to make any changes to the firing order or you could end up with severe performance issues. 

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