Spark Plugs
Melting Slicks
Joined: Mar 2005
Posts: 2,094
Likes: 298
From: Midlothian VA
Race Director
Joined: Nov 2006
Posts: 13,227
Likes: 7,823
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
I run NGK myself.
Le Mans Master
Joined: Jan 2007
Posts: 7,990
Likes: 3,334
From: Omaha NE
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2022 C3 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
NGK's for me too.
They gave me the smoothest idle I've ever had...
They gave me the smoothest idle I've ever had...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,135
Likes: 4,244
From: US-PNW
Funny thing about my '67's NGKs - I could order the "car" packaging but wait 3 days or they were immediately available as individual lawnmower plugs packaged on hang cards. The guy at Autozone was kinda thinking I shouldn't be using them in a car. . 
Burning Brakes
Joined: Jan 2006
Posts: 1,223
Likes: 174
From: Fort Wayne IN
I think I put $2 AutoLite's in it last time. They spark like they are supposed to and it makes the car go vroom vroom. 
In my opinion if you're paying $8 a plug to just drive around town and cruise, you're out of your mind.
In my opinion if you're paying $8 a plug to just drive around town and cruise, you're out of your mind.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,135
Likes: 4,244
From: US-PNW
My Delcos' terminal tips kept loosening up; even if I used pliers to snug them down, they'd work loose to only finger tight. Considered Loc-tite but the heat wouldn't work with that. Have you experienced that at all? (The NGKs are a fixed tip.)