The firing order for a 383 stroker is 1-8-4-3-6-5-7-2. This standard sequence applies to Chevy small-block engines, including strokers built on the 350 block.
What is a 383 stroker and why the order matters
A 383 stroker is a high-displacement version of the Chevy small-block, typically achieved by using a 3.75-inch stroke crank on a block with a 4.0-inch bore, producing about 383 cubic inches of displacement. The firing order remains the same as other SBC engines because of the shared cylinder arrangement and cam timing. Getting the order right is essential for smooth running and optimal power delivery.
Standard firing order for Chevy small-block engines
Before listing the firing order, note that the eight cylinders are numbered 1 through 8 around the block. For most Chevy small-blocks, including the 383 stroker, the sequence is as follows:
- 1
- 8
- 4
- 3
- 6
- 5
- 7
- 2
The sequence above is the standard firing order for the Chevy small-block. When wiring the distributor, start with the wire for cylinder 1 on the distributor cap and follow the numbers around in the same order to cylinders 8, 4, 3, 6, 5, 7, and 2.
Practical wiring and verification
Wiring the distributor
When installing or re-wiring the distributor, align the rotor with cylinder 1’s position at top dead center on the compression stroke. Route the spark plug wires in the 1-8-4-3-6-5-7-2 order from the distributor cap to the corresponding cylinders.
Verifying with a timing light
Use a timing light to verify ignition timing and firing order. If readings are off, double-check the distributor position, cap orientation, and wire routing, especially after cam or distributor changes.
Summary
For a 383 stroker, the firing order mirrors the standard Chevy small-block sequence: 1-8-4-3-6-5-7-2. This order should be followed when wiring and tuning, with verification via timing checks if components are changed.