Firing Order of 8 Cylinder Engine (PDF) [V8 Explained]

In the firing order of an 8-cylinder engine, motors don’t fire in that sequence of 1-2-3-4-5-6, etc. As it could make the driving rod disfigure or break. The firing order of cylinder 8 engine or grouping where in the motor cylinder fire or create and convey power is known as the firing order of 8 cylinder engine.

The front-most or closest to the radiator is the number one cylinder in an in-line engine. In this way, those behinds are the numbers 2 and 3.  The firing order relies on the number of cylinders. The difference between the engines depends upon the situation.

You can also see the Firing order of a 4 cylinder engine.

There is no accurate practice for numbering the cylinder in V-type motors. The cylinder near the radiator is assigned number 1. The cylinder behind is stated as cylinder number 2. In V motors, the technique for numbering cylinders isn’t proper. 

Firing Order of 8 Cylinder 2024

  • Firing Order 1-5-4-2-6-3-7-8.

Explanation of the firing order of an 8-cylinder engine? 

The authentic firing order of an 8-cylinder engine is the arrangement of the spark plugs or attachments. On motors with a wholesaler, the firing order is not set in stone by the directing of the spark plug wires from the cylinder. The authentic firing order of the 8-cylinder engine is 1-5-4-2-6-3-7-8. The firing order of a small block is 1-3-7-2-6-5-4-8.

And the firing order of big blocks relies upon its model year. Also when the cylinder is at the top right on target (TDC) on the pressure stroke, the rotor inside should be lined up with the main spark plug. On most engines, the number 1 cylinder is the most important cylinder at the front of the engine on the traveler side of a back tire drive vehicle or truck.

The cylinders are numbered in firing order beginning with the number 1 cylinder going towards the rear of the motor on every cylinder bank. The main exception is which are numbered in a grouping. 

This firing order applies to:

  1. Ford 351
  2. 5.0L EFI
  3. 5.4L
  4. 5.8L V8

Torque Specifications

Fastener Type Torque Spec
Main Cap Bolts 95-105 ft.-lbs.
Connecting Rod Bolts 40-45 ft.-lbs. (45-50 ft.-lbs. for Boss 351C)
Cylinder Head Bolts (Follow factory torque sequence) 105 ft.-lbs. (125 ft.-lbs. for Boss 351C)
Rocker Arms (Non-adjustable) 18-22 ft.-lbs.
5/16 in. Intake Manifold Bolts 21-25 ft.-lbs.
3/8 in. Intake Manifold Bolts 28-33 ft.-lbs.
Oil Pump Bolt 25 ft.-lbs.
Cam Bolts 40-45 ft.-lbs.
Cam Thrust Plate Bolts 9-12 ft.-lbs.
Harmonic Damper Bolt 70-90 ft.-lbs.
Flywheel/Flexplate Bolts 75-85 ft.-lbs.
Pressure Plate Bolts 35 ft.-lbs.
Front Cover Bolts 12-18 ft.-lbs.

Check Big Block Chevy Firing Order

Why is the firing order of an 8-cylinder engine important? 

The perfect firing order is very necessary and important because stirring up the spark plugs keeps the engine from turning over. Also, it makes it run ineffectively. On engines where two nearby spark plugs fire just after one another.

It is necessary to ensure the light attachment wires are not right close to one another for a significant distance. This can cause a crossfire between the attachments that the attractive field made by the spark going to one fitting might fire the following attachment rashly.

It also makes the engine run unpleasant. To keep this from occurring, confuse the two fitting side-by-side plug wires to counterbalance the two plugs opposite to each other. On the engine, it starts with systems or loop on-plug start frameworks.

The firing order of an 8-cylinder engine is managed by the start module or engine. The system gets an information signal from the driving rod position sensor to figure out which cylinder is coming up to the top right on target on its pressure stroke. 

Check out Straight 6 Firing Order

What firing order of an 8-cylinder engine is preferred? 

The firing order should be viewed as based on engine vibrations and cooling. Also, the firing order of the 8-cylinder depends upon the adjusting of the engine. Also, one major reason for the firing order of 8 cylinders is 1-3-4-2.

As the power driving forces are equally distributed and are 180 degrees separated. So keeping in mind the firing order of the 8-cylinder engine is 1-3-4. This balance between the two headings would further decrease the engine vibrations. Also cooling the part of the engine by changing the sequence is required. With this, the issue of overheating can be relieved.

Try Inline 4 Firing Order


Jake Mayock