What size is Chevy 350 spark plug?

The Size of Spark Plug for a Chevy 350 Engine
The spark plug size for a Chevy 350 engine is 14mm . This is the standard size for most spark plugs, so you should be able to find them at any auto parts store. Keep in mind that the actual size of the plugs may vary slightly depending on the manufacturer, but as long as they are close to 14mm, they should work fine.
Spark Plug Gap and Torque
When installing spark plugs in a Chevy 350 engine, it’s important to set the spark plug gap correctly. The recommended spark plug gap for a Chevy 350 is 0.035 inches . This gap ensures proper ignition and combustion.
Additionally, it’s crucial to tighten the spark plugs to the correct torque specification. The recommended spark plug torque for a Chevy 350 is 18-22 ft/lbs. This torque range is considered standard for most engines, so you should have no trouble finding the right plugs and torqueing them properly.
Remember to always verify the gap with a spark plug gap tool, as spark plugs come pre-gapped but it’s good practice to double-check.
I hope this information helps! Let me know if you have any further questions.

What is the order of spark plugs on a 350 small-block?

The firing order of the classic Chevrolet 350 small-block engine is 1-8-4-3-6-5-7-2.

Is 5 8 the same as 16mm?

16mm = 5/8 inch. 17mm = almost 11/16 inch. 18mm = just over 11/16 inch. 19mm = 3/4 inch.

Do I need a special socket for spark plugs?

Spark Plug Sockets
These special sockets contain rubber isolators inside intended to absorb any possible vibration within and protect the glass featured along the spark plug. Regular sockets do not contain the rubber feature and using them may result in breakage when attempting a spark plug replacement.

What size thread are Chevy 350 spark plugs?

spark plug thread – Chevy Message Forum – Restoration and Repair Help. i just learned that the thread size on the spark plug hole of a chevy 350 is metric 14×1. 25….

What size socket fits a spark plug?

What size socket do I need to change out spark plugs? For the majority of plugs, you need a 5/8” or 16mm socket. Some Fords use 9/16″ plugs, some newer European and Asian vehicles use 14mm plugs, and there are a few applications that use 7/8″, 13/16″, ¾” or 18mm plugs.

What is the spark plug gap for a Chevy 350?

0.035 inches
However, the most common spark plug gap for a 350 Chevy is 0.035 inches. It is important to note that the spark plug gap should always be set to the manufacturer’s recommended specification to ensure optimal engine performance. Setting the gap incorrectly can lead to misfires, poor fuel economy, and even engine damage.

What is the order of spark plugs on a 350 small block?

The firing order of the classic Chevrolet 350 small-block engine is 1-8-4-3-6-5-7-2.

What size thread is a 5 8 spark plug?

Spark Plugs – 14mm Spark Plug Thread Size – 5/8 in.

What size is the spark plug wrench on a Chevy 350?

CHEVROLET 5.7L/350 Spark Plugs – 13/16 in. Wrench Diameter – Free Shipping on Orders Over $109 at Summit Racing. Spark Plug Reach (in.)

What is the spark plug gap on a 5.7 v8?

The spark plug gap for the 5.7 Hemi is 0.45″.