Chevy Small-Block V8 (350, 305, 327, 283, 400) Firing Order

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

Cylinder numbering: Odd cylinders 1-3-5-7 on the left bank, even 2-4-6-8 on the right bank, numbered front to rear; #1 is the left-front cylinder.

Firing order diagram

TIMING END ▲Distributor turns clockwise (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

EnginesChevrolet small-block Gen I and Gen II V8: 262, 265, 267, 283, 302, 305, 307, 327, 350, 400. Not LS, not LT5.
Years1955-2003
Firing order1-8-4-3-6-5-7-2
Cylinder numberingOdd cylinders 1-3-5-7 on the left bank, even 2-4-6-8 on the right bank, numbered front to rear; #1 is the left-front cylinder.
Distributor rotationclockwise

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