Ahhh, never mind, I found it. They moved it.
AC/Delco Plugs
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
AC/Delco Plugs
I am going to do a major tune of my L98 and there was a good article about different plugs with dyno results as well. Since that posting, the website that did it has dumped the article and I didnt save the info. Normally my old iron head L98 would take a R43TS but there was another AC/D plug mentioned in the article. I dont think it was anything fancy but as far as dyno results, the numbers were right up there with much more expensive plugs. Anybody remember which plug it was or save the article?
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
What do you think of Autolite plugs? I'm asking because Autolite now makes AC-Delco. This came from a NAPA store manager who is pretty up on his products.
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
If you want the so called mystery plugs they are not cheap but readily available from a Bosch race dealer. I can point anyone to one in the NYC area the person is a friend so be real and be ready to spend the coin and not waste their time is another requirement. For the most part they are a cold plug and not generally suited for long periods of light loading so be warned there too.
Dave
Dave
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
I have had great luck with their regular plugs, but everyone I know has problems with their race plugs. They just don't last.
Thread Starter
Safety Car
Joined: Nov 2008
Posts: 4,328
Likes: 15
From: Jacksonville FL
No real brand loyalty here, it was just good bang for the buck. The NGK is a little cheaper and performs well. I figure I could spend in the $3-4 range and get a decently performing plug. Anything higher is crazy to me. No way I am paying $11 per plug as this car will never see a dyno or track. I hope if Autolite has taken over AC/D's production they dont screw with the specs.
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Brett Foote
Burning Brakes
Joined: Oct 2009
Posts: 773
Likes: 2
From: Minneapolis MN
Horsepower TV did a back-to-back dyno comparison using a "standard" plug vs. the fairly new E3 spark plugs & found that the E3s gained 3hp or something around that amount.I installed NGKs in my vette but generally recommend installing factory recommended plugs on vehicles unless modified,then I ask people with experience in that specific engine modifing field thats done it before & know what works best
Melting Slicks
Joined: Nov 2008
Posts: 2,765
Likes: 5
I have had best performance using ACCEL brand spark plugs in the past.
Recently switched over to CHAMPION Spark Plugs.
Excellent Throttle responsive off the line and cruising at high speeds.
No Misfire issues.
Proper Heat Range matched to my engine.
Like Champions at least in my Corvette.
They Both are Old School Style Copper Core Spark Plugs I like best.
I don't mind changing out spark plugs every 10,000 - 20,000 miles.
Not a fan of platinum or Iridium plugs. Tried them and never noticed any difference over a standard plug.
AC Delco plugs work OK, tried them too.
Autolite makes a decent spark plug also.
Recently switched over to CHAMPION Spark Plugs.
Excellent Throttle responsive off the line and cruising at high speeds.
No Misfire issues.
Proper Heat Range matched to my engine.
Like Champions at least in my Corvette.
They Both are Old School Style Copper Core Spark Plugs I like best.
I don't mind changing out spark plugs every 10,000 - 20,000 miles.
Not a fan of platinum or Iridium plugs. Tried them and never noticed any difference over a standard plug.
AC Delco plugs work OK, tried them too.
Autolite makes a decent spark plug also.
