Same plug here. 
Ever since it was first fired. 
What Spark Plugs Do You Use?
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,366
Likes: 7
From: Las Vegas NV
What Spark Plugs Do You Use?
Okay, I know there's a ton of choices for spark plugs, so I'd like to get your feedback on what plugs you've used and like. Here's my setup:
- L46 (350/350)
- Pertronix Ignitor II
- Pertronix Flamethrower II coil
- 8mm wires
I use my car for a driver (not racing), although I do occasionally like to get on it from stoplight to stoplight.
- L46 (350/350)
- Pertronix Ignitor II
- Pertronix Flamethrower II coil
- 8mm wires
I use my car for a driver (not racing), although I do occasionally like to get on it from stoplight to stoplight.
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
My 2 cents:
AC Delco: I don't like the black oxide. Seems they rust quite a bit after a year or so.
Bosch: Hate the screw-on insulator tip. Always comes loose.
Champion: Good plug. Solid tip (not screw on) and they are (I believe) zink coated so they don't rust.
NGK: Same pros as Champion. For some reason my 454 loves the NGK FR45's so that's what I run. Note: FR45 won't work on stock heads. I have aftermarket heads.
AC Delco: I don't like the black oxide. Seems they rust quite a bit after a year or so.
Bosch: Hate the screw-on insulator tip. Always comes loose.
Champion: Good plug. Solid tip (not screw on) and they are (I believe) zink coated so they don't rust.
NGK: Same pros as Champion. For some reason my 454 loves the NGK FR45's so that's what I run. Note: FR45 won't work on stock heads. I have aftermarket heads.
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
Originally Posted by greyghost79
anybody using iridium??? what makes a spark plug worht $12.00 a piece?
Le Mans Master
Joined: Mar 2004
Posts: 7,493
Likes: 1,501
From: Little Rock AR
Autolite are my first choice. After that I would run AC or Champion. I have never seen any benefit from a fancy plug personaly. The Autolites last longer without fouling in my experience. Probably has a wider heat range I guess.
-Mark.
-Mark.
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
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Originally Posted by greyghost79
anybody using iridium??? what makes a spark plug worht $12.00 a piece?
