Chevy LS1 Firing Order and Cylinder Numbering Diagram
Chevy LS1 firing order 1-8-7-2-6-5-4-3 with odd/even bank numbering, coil layout, and no-start or misfire checks.
The Chevrolet LS1 firing order is 1-8-7-2-6-5-4-3. The driver-side bank is 1-3-5-7 and the passenger-side bank is 2-4-6-8, front to rear.
The Chevrolet LS1 firing order is 1-8-7-2-6-5-4-3. The driver-side bank is 1-3-5-7 and the passenger-side bank is 2-4-6-8, front to rear. A firing order is the sequence in which the cylinders begin their power strokes. It is not the same thing as cylinder numbering, distributor-cap clock position, or ignition-coil connector order. Confusing those references can create a no-start, violent backfire, dead cylinders, or a diagnostic trail that looks like a fuel or mechanical problem.
Use the verified order only after identifying the engine family and camshaft. Classic engines can accept camshaft swaps that change the required sequence, while modern coil-on-plug engines have no distributor cap to route. The table, bank diagram, and procedure below keep those concepts separate and show how to confirm No. 1 on compression before moving any wires.
Interactive Chevrolet LS1 5.7L V8 firing-order diagram
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Select each cylinder to walk through the firing order. Cylinder-bank numbering and distributor direction must match the identified engine family.
Chevy Ls1 Firing Order
| APPLICATION / ITEM | SPECIFICATION | NOTES |
|---|---|---|
| LS1 firing order | 1-8-7-2-6-5-4-3 | Gen III LS sequence |
| Driver-side bank | 1-3-5-7 | Front to rear |
| Passenger-side bank | 2-4-6-8 | Front to rear |
The LS1 uses individual coils, so verify cylinder and harness identity rather than arranging wires around a distributor cap.
Which LS1 5.7L V8 firing order applies?
The LS1 does not use the classic small-block 1-8-4-3-6-5-7-2 sequence. This distinction matters because the engine can look nearly identical from above. Treat the camshaft or engine assembly as the authority when parts have been mixed. A firing order cast into an intake, copied from a generic decal, or remembered from another V8 is not enough to identify a modified engine.
The application table separates the order, cylinder banks, and ignition-system notes. Read all columns before routing. The first number in 1-8-7-2-6-5-4-3 is cylinder 1, but the physical No. 1 terminal can appear in different clock positions when a distributor has been installed on a different gear tooth.
Bank numbering and verification on the LS1 5.7L V8
Odd cylinders are driver side and even cylinders passenger side in normal installed orientation.
The LS1 uses individual coils, so verify cylinder and harness identity rather than arranging wires around a distributor cap.
Chevrolet LS1 5.7L V8 specifications can change by model year, engine, platform, wheel, and installed component. Confirm the VIN or engine identity, part numbers, fastener condition, and the current manufacturer instructions before service.
Procedures used with this specification
These steps are the same for every vehicle in this family, so they are documented once rather than repeated on each page. The values above remain specific to this Chevrolet LS1 5.7L V8.
Chevy LS1 Firing Order and Cylinder Numbering Diagram FAQs
What is the chevy ls1 firing order?+
The Chevrolet LS1 firing order is 1-8-7-2-6-5-4-3. The driver-side bank is 1-3-5-7 and the passenger-side bank is 2-4-6-8, front to rear.
Technical sources
TorqueSheet favors engine- and component-specific manufacturer instructions over unsourced universal values.
1Chevrolet technical engine specification — LS-family firing orderPrimary Chevrolet technical data showing the Gen III/IV-style 1-8-7-2-6-5-4-3 order and bank numbering.↗