Chevrolet 6.2L (376 cu in) LT4 firing order — diagram & guide

As a high-performing and supercharged version of the LS3 engine, Chevy’s LT4 went into some modern-day cars that are likely to become classics at some point. However, although the engine is superb in terms of reliability and performance, it still needs proper maintenance and frequent checkups.

So, our guide on the Chevrolet 6.2L (376 cu in) LT4 firing order may help you out if you face any sort of misfire or problems starting the vehicle. We’ll also discuss a few other related points along with the cylinder layout in this engine to help you keep the engine running properly.

Chevrolet 6.2L LT4 firing order

There are many drivers who think that the firing order of this engine is different from other LS engines, particularly the LS3 that it’s based on. So, to clear that up – the Chevrolet 6.2L LT4 firing order is 1-8-7-2-6-5-4-3 which is exactly the same as the LS3, and a few other LS engines like the LS7.

Basically, all these small block V8s from that time have the same firing pattern, only the LT4 is a bit different when it comes to the build. It comes from a factory fitted with a 1.7-liter Eaton supercharger, which adds up to the power output difference.

However, unlike some owners may think, this doesn’t affect the order in which the cylinders fire within the engine, so the firing order is still 1-8-7-2-6-5-4-3.

Chevrolet 6.2L LT4 cylinder diagram

Now we come to the next crucial part of this guide – the cylinder order within the LT4 engine. Once again, the fact that this engine is a high-performance version of the LS3 with a supercharger doesn’t make the order of the cylinders any different.

By this we don’t mean the firing order but the cylinder layout in the engine in particular. The first cylinder is the one on the driver’s side that’s closest to the radiator, so from that perspective the cylinders in this bank line up from 1 to 3, 5, and 7.

On the other hand, the passenger’s side includes cylinders 2, 4, 6, and 8 looking from the radiator to the rear end of the engine.

Chevrolet 6.2L LT4 vehicle applications

When it comes to the vehicle applications of this engine, it wasn’t only featured in Chevy models, but also in a few other high-performing GM models. So, to make sure you’ve got it right with the firing order and proper maintenance for your engine type, we’ve made a full list of all the models:

• Chevrolet Camaro ZL1
• Chevrolet Corvette Corvette Z06
• Cadillac CTS-V
• Cadillac CT5-V Blackwing
• Cadillac Escalade-V

So, all these vehicles use the same base engine which means you can apply the mentioned firing order to all of them.

Our take

So, this guide took you on the journey of going through all the main details about the LT4’s firing order and other relevant details about the engine.

We hope that it will be enough to give you some insight into the first aid needed for the engine to properly work, or at least help with misfires until you reach a workshop.