Spark Plug Wire Re-Routing

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May 10, 2017 | 12:34 PM

JayRay

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From: Rancho Santa Margarita CA

Spark Plug Wire Re-Routing

I have been reading on the forums that changing the spark plug wires on a C3 (1977 L48) can be a pain so I was looking at getting these spark plug dividers that bolt onto the valve cover.

https://www.corvettemods.com/C3-C4-C...s_p_14345.html

Has anyone used these before. I had a few questions about them.
1. Will I still used the stock length of spark plug wires? If not does anyone know what wires I should be using?
2. I assume I will need to take off the heat shields and keep them off, the ones mounted right above the spark plugs.or no.
3. Will I also be removing the the current wire Divider's, original I believe, that run the wires down the engine compartment shortly after leaving the distributor.

I appreciate any help, this is my first Corvette that I just picked up a few days ago.

May 10, 2017 | 03:52 PM

Easy Mike

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Use the stock routing and you won't need the aftermarket wire looms.

May 10, 2017 | 04:04 PM

jim2527

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From: Tampa, Florida

+1. Stock routing is easy...down, back and up.

May 10, 2017 | 04:20 PM

Alan 71

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From: Westminster Maryland

Hi JR,
The 4 heat shields should probably remain in place since they protect the spark-plugs and the wire connections from the intense exhaust manifold heat.
Regards,
Alan

May 10, 2017 | 05:21 PM

JayRay

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From: Rancho Santa Margarita CA

Quote:

Originally Posted by Easy Mike

Use the stock routing and you won't need the aftermarket wire looms.

After taking another look it does not look like the aftermarket ones will work, the way they mount is blocked by my manifold.

Do you need to disconnect the stock routing to be able to run the wires through?

It looks like I will need to disconnect them anyway to clean them and repaint. They are covered in oil from a leaky valve cover...

May 10, 2017 | 05:45 PM

Alan 71

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From: Westminster Maryland

Hi JR,
Here are a couple of sb photos.
Regards,
Alan

Left Side:

Right Side:

Last edited by Alan 71; May 10, 2017 at 05:47 PM.

May 10, 2017 | 05:55 PM

JayRay

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From: Rancho Santa Margarita CA

[QUOTE=Alan 71;1594711622]Hi JR,
Here are a couple of sb photos.
Regards,
Alan

Thanks for the Pics! Lets me get a good look at it, awesome!

Do you thread the wires through this piece with the arrows below or removing it to thread the wires through? The boots look like they will be a tight fit at best to get through.

May 10, 2017 | 06:04 PM

Alan 71

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From: Westminster Maryland

Hi JR,
One way that has proved to be a help is to start the spark plug wire at the spark plug… that way you're threading the small distributor cap boot through the 'boomerang' shield.
It also helps get the wire through the engine mount by working from the spark-plug and threading toward the distributor.
Sometimes removing the boomerang is a problem so try working from the spark plug first.
Regards,
Alan

Last edited by Alan 71; May 10, 2017 at 06:05 PM.