Plugs and Wires
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 1,164
Likes: 5
From: Middle Earth
Plugs and Wires
Ok I have a (as far as I know) stock 89. I am trying to start slow on the moding so I am going to swap the plugs and wires. I have had good luck with NGKs in my Fords but am not sure about the 350. So what plugs and wires have the best sucess in C4s?
thanks,
Crazy
thanks,
Crazy
Race Director
Joined: Sep 2004
Posts: 13,793
Likes: 0
From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
There seems to be a lot of people who like Delco and Bosch. This has been a widely discussed topic with several good responses. You may want to use the search feature as you will find some interesting thoughts on this topic.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Im not picky on plugs, but MSD makes 8.5 mm wires that fit nice, (i drilled out the looms to 8.5) and they come in red or black. The black almost looks stock. Very heat resistant. Thats important if you have headers.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by Spankyellow
Im not picky on plugs, but MSD makes 8.5 mm wires that fit nice, (i drilled out the looms to 8.5) and they come in red or black. The black almost looks stock. Very heat resistant. Thats important if you have headers.
I've had the MSDs on for over 20K miles with stock manifolds and two different kinds of long tubes with no problems. When new they can be a little difficult to get the boots seated but after some use, they go on pretty easily. As far as plugs go, I use the standard NGKs. I'm not a big believer in expensive plugs for this car as I would prefer to renew them regularly. I did however have good luck with some Autolite double platinums on my Nissan sedan. After 65K miles they still looked new and were still gapped on spec. There was no problem with the platinum "pucks" coming off as I've heard about with the Bosch and even the AC platinums. So if this is something you don't want to do often, that is the platinum plug I would recommend. For years, I never used anything but Autolites in my cars. They've always been an excellent plug.
Le Mans Master
Joined: Mar 2002
Posts: 5,300
Likes: 4
From: Mississauga, Ontario Corvettes were built to be driven...not trailered
St Jude Donor '07-'08-'09
Originally Posted by jrscott
Delco Rapidfire here. 
Make sure you get the thin electrode version. I was told there were different types through the years. Idles at 900 and is as smooth as you can get (Turq '91).
Make sure you get the thin electrode version. I was told there were different types through the years. Idles at 900 and is as smooth as you can get (Turq '91). When I first got my 86, I did the same thing starting with easy mods like wires and plugs and BELIEVE me, the Rapidfires work the best..I have tried all those other plugs with the fancy prongs and split diodes but for my 2 cents, Delco is the way to go... 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
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
