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Pontiac Engine Information

Published on June 18, 2026

Pontiac V8

265, 301, 307*, 326, 350, 389, 400, 421, 428, 455

Firing Order

Firing Order 1-8-4-3-6-5-7-2

Cylinder NumberingDistributor Rotation
GM Cylinder Numbering Distributor Rotation Counter ClockwiseRotor Under Cap Spins:CounterClockwise(*307 rotates Clockwise)

These graphics courtesy of Boxwrench.com

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Pontiac Engine Information - Butler Performance