What is the firing order of a 327?
The firing order is 1-8-4-3-6-5-7-2, and this sequence applies to the Chevrolet 327 small-block V8 as well as other Chevy small-block engines from the era. It dictates the order in which spark plugs fire and how the distributor should be wired for proper timing.
What the firing order means for a 327
The Chevrolet 327 is a classic 327 cubic inch V8 from the Chevrolet small-block family produced in the 1960s. Like other small-block Chevys, it uses the same basic firing order to coordinate ignition timing across all eight cylinders. Using the correct order is essential for smooth operation, optimal power, and proper exhaust scavenging.
Standard firing order across Chevrolet small-block engines
Chevrolet’s small-block V8s, including the 327, share a common firing order. This means the sequence 1-8-4-3-6-5-7-2 applies to the 327 as well as the 265, 283, 302, and 350 families. When wiring a rebuilt engine or reinstalling a distributor, follow this sequence to ensure correct timing and firing symmetry.
Before listing the sequence in explicit order, note that the following section presents the firing order in a clear, step-by-step format to verify wiring and distributor timing.
- Cylinder 1 fires first
- Cylinder 8 fires second
- Cylinder 4 fires third
- Cylinder 3 fires fourth
- Cylinder 6 fires fifth
- Cylinder 5 fires sixth
- Cylinder 7 fires seventh
- Cylinder 2 fires eighth
In practice, use this order when connecting spark plug wires or setting distributor timing. Always verify against a factory service manual or a reputable source for your exact vehicle year and model, since variations can exist in non-standard configurations or aftermarket setups.
Quick reference: cylinder numbering and wiring tips
For most Chevrolet small-blocks, the cylinders are numbered 1 through 8 in a standard pattern around the engine as viewed from the front. When wiring, start with cylinder 1, follow the firing order 1-8-4-3-6-5-7-2, and route the wires accordingly through the distributor cap. If you rely on diagrams, a factory service manual or a trusted automotive repair resource will have a precise schematic for your specific year and model.
Summary
The Chevrolet 327’s firing order is 1-8-4-3-6-5-7-2, the same as other Chevrolet small-block V8s. This sequence governs the spark plug wiring and distributor timing to ensure proper engine performance. Always consult your manual or a certified source for exact wiring diagrams relevant to your vehicle.
