Common V8 Engine Firing Orders

By March 11, 2015Engine
Common V8 Enging Firing Orders

Has a simple distributor cap and rotor change suddenly taken a turn for the worse? Things could get complicated rather quickly when you’ve lost track of your wiring order and nothing is more frustrating than hearing your car struggling to come back to life after surgery.

The firing order of an engine is the sequence that the spark plugs fire. On engines with a distributor, the firing order is determined by the routing of the spark plug wires from the distributor cap to the spark plugs in each cylinder. When the piston is at top dead center (TDC) on the compression stroke, the rotor inside the distributor should be aligned with the number one (#1) spark plug terminal in the distributor cap.

Here’s a handy chart for some of the most popular V8s to help you get back on track and get that engine on its way to recovery!

AMC (Most V8s)

Common Engine Firing Orders
1-8-4-3-6-5-7-2

BUICK (Most except nail head)

Common Engine Firing Orders
1-8-4-3-6-5-7-2

BUICK Nail Head 401, 425

Common Engine Firing Orders
1-2-7-8-4-5-6-3

CHEVY (except LS)

Common Enging Firing Orders
1-8-4-3-6-5-7-2

GM LS

Common Engine Firing Orders
1-8-7-2-6-5-4-3

CHRYSLER Small Block

Common Engine Firing Orders
1-8-4-3-6-5-7-2

CHRYSLER Big Block & Hemi

Common Engine Firing Orders
1-8-4-3-6-5-7-2

Modern Hemi

Common Engine Firing Orders
1-8-4-3-6-5-7-2

FORD Flat Head

Common Engine Firing Orders
1-5-4-8-6-3-7-2

FORD Y Block

Common Engine Firing Orders
1-5-4-8-6-3-7-2

FORD 289, 302, FE, 429, 460

Common Engine Firing Orders
1-5-4-2-6-3-7-8

FORD 5.0L EFI, 351W, 351, 400

Common Engine Firing Orders
1-3-7-2-6-5-4-8

FORD MOD MOTOR

Common Engine Firing Orders
1-3-7-2-6-5-4-8

OLDSMOBILE

Common Engine Firing Orders
1-8-4-3-6-5-7-2

PONTIAC (Most V8s)

Common Engine Firing Orders
1-8-4-3-6-5-7-2

VW

Common Engine Firing Orders
1-4-3-2

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