Pontiac V8 Firing Order

Firing order: 1-8-4-3-6-5-7-2 (18436572).

Cylinder numbering: Left bank 1-3-5-7, right bank 2-4-6-8, front to rear

Firing order diagram

TIMING END ▲Distributor turns counterclockwise (viewed from the top)1134567728436582Driver sidePassenger side
firing order 1-8-4-3-6-5-7-2. The small number by each cylinder is its place in the firing order.

Details

EnginesPontiac V8: 265, 287, 301, 316, 326, 347, 350, 370, 389, 400, 421, 428, 455
Years1955-1981
Firing order1-8-4-3-6-5-7-2
Cylinder numberingLeft bank 1-3-5-7, right bank 2-4-6-8, front to rear
Distributor rotationcounterclockwise

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