Buick Nailhead V8 Firing Order

Firing order: 1-2-7-8-4-5-6-3 (12784563).

Cylinder numbering: RIGHT bank 1-3-5-7, left bank 2-4-6-8, front to rear.

Firing order diagram

TIMING END ▲Distributor turns clockwise (viewed from the top)2245678411385673Driver sidePassenger side
firing order 1-2-7-8-4-5-6-3. The small number by each cylinder is its place in the firing order.

Details

EnginesBuick Nailhead V8 264, 322, 364, 401, 425
Years1953-1966
Firing order1-2-7-8-4-5-6-3
Cylinder numberingRIGHT bank 1-3-5-7, left bank 2-4-6-8, front to rear.
Distributor rotationclockwise

More