LT4 maintenance
Thread Starter
TheCorvetteBen
Joined: Feb 2007
Posts: 4,987
Likes: 144
From: Van Alstyne, TX
LT4 maintenance
Looking to possibly do plugs and wires on my LT4, but am not sure how old they are. There is a possibility the are original, which is scary. The can runs totally fine. Wires are red (was this factory)? Also, what brand and type of spark plugs came with these engines? Any ideas for good brands to replace everything with?
Thanks!
Thanks!
Race Director
Joined: Oct 2011
Posts: 16,089
Likes: 819
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Just about every LT4 I've seen has red wires, so I'd say it was from the factory. I put AC Delco plugs in my LT1. If you change the wires, go with Taylor Spiro Pro. Love mine
Cruising
Joined: Apr 2015
Posts: 14
Likes: 2
From: Miami FL
The original plug wires on the LT4 are red and have the cylinder number printed on them. The ACDelco replacements do not have the numbers on them. The originals can be worth some good money if they are in good shape, so don't just throw them away.
Thread Starter
TheCorvetteBen
Joined: Feb 2007
Posts: 4,987
Likes: 144
From: Van Alstyne, TX
Seriously? who buys used wires?
Le Mans Master
Joined: Feb 2000
Posts: 9,061
Likes: 214
From: Epping NH
Doubtful you need to replace the wires unless you can visibly see signs of cracks...copper doesn't lose its ability to transfer electricity, even plugs might be fine...of course all of this is based on mileage of the car.
Race Director
Joined: Oct 2011
Posts: 16,089
Likes: 819
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
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