What's the HEI Firing Order for Small Block Chevy?

That’s a smart idea, jennifer77. I’ve seen folks tape the wires together to keep them organized. What should we watch out for during installation?

Common mistakes include leaving loose connections and not routing the wires properly to avoid heat sources. Always give them a good tug post-installation.

Great advice! Any suggestions for double-checking the firing order after installation?

Use a timing light to verify that your ignition timing matches the firing order. It’s a fool-proof way to ensure everything is functioning as intended!

A timing light is essential! If you don’t have one, cranking the engine a bit can also help you confirm the firing order visually.

I’d rather not lose a finger! How do you keep safe while doing this?

Safety first! Always keep hands away from moving parts. Disconnect the battery, and wear safety goggles while working. Better safe than sorry!

The firing order for Small Block Chevy engines is typically 1-8-4-3-6-5-7-2. Getting this wrong can lead to serious issues like misfires or backfiring.

5 Likes

Does anyone know what issues I might encounter if I accidentally fire one of the cylinders out of order?

Misfires and poor engine performance are common if the firing order is incorrect. It can also cause strange sounds and vibrations when running at higher RPMs.

That’s good to know! What are some troubleshooting tips if I suspect a firing order issue?

Start by checking the distributor cap and ensuring that the spark plug wires follow the correct firing order. Also, inspect for any loose connections.

Thanks, David! I’ll definitely check the wiring and connections first.

If you’re still having issues, consider testing the ignition coil and spark plugs. Sometimes, it’s not just about the wires but the components themselves.

So true! I once replaced my spark plugs only to find they were mismatched. That can mess up the whole engine!

What a nightmare! It’s crucial to have all components compatible. What are the recommended spark plugs for a Small Block Chevy?

4 Likes

Generally, AC Delco or NGK plugs work well for Small Block Chevys. Always check your manual for specific recommendations though!

Great advice! I like to keep a checklist of parts to ensure everything matches.

Just remember: even the smallest mistake in the firing order can create big headaches. It’s like playing Jenga with your engine!