What spark plugs do you use?
Thread Starter
Instructor
Joined: Jan 2012
Posts: 145
Likes: 2
From: Gainesville Florida
What spark plugs do you use?
I have a 93 C4 with 70k miles.
Mods: k&n filter, DRM 400 conversion ( p&p heads,cam,high flow springs/valve,headers,tb )
Right now I found out it had bosch platnum plugs in it and in my experince you never put a bosch plug in a chevy. Just whats worked for me.
Should I go with stock AC delco or somehting different with the things that have been done to the motor?
What are you using and how has it worked for you?
Mods: k&n filter, DRM 400 conversion ( p&p heads,cam,high flow springs/valve,headers,tb )
Right now I found out it had bosch platnum plugs in it and in my experince you never put a bosch plug in a chevy. Just whats worked for me.
Should I go with stock AC delco or somehting different with the things that have been done to the motor?
What are you using and how has it worked for you?
Slingshot
Joined: Dec 2001
Posts: 3,817
Likes: 24
From: Charlotte NC
FWIW
Heel & Toe
Joined: Feb 2012
Posts: 22
Likes: 0
I have a 93 C4 with 70k miles.
Mods: k&n filter, DRM 400 conversion ( p&p heads,cam,high flow springs/valve,headers,tb )
Right now I found out it had bosch platnum plugs in it and in my experince you never put a bosch plug in a chevy. Just whats worked for me.
Should I go with stock AC delco or somehting different with the things that have been done to the motor?
What are you using and how has it worked for you?
Mods: k&n filter, DRM 400 conversion ( p&p heads,cam,high flow springs/valve,headers,tb )
Right now I found out it had bosch platnum plugs in it and in my experince you never put a bosch plug in a chevy. Just whats worked for me.
Should I go with stock AC delco or somehting different with the things that have been done to the motor?
What are you using and how has it worked for you?
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Racer
Joined: Jul 2004
Posts: 351
Likes: 3
From: amarillo tx
spark plugs
FWIW, i used autolite plugs for many years. i had 4 plugs left from several years ago that were stamped made in USA. i went to the local parts store to get 4 more and noticed that they are not stamped any more, made in USA, but are now made in china. i called autolite and told them why i will no longer use their product. now, i am going to all ac delco plugs, still made in USA. just my 02. see ya
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 413
From: WV
My suggestion is to run the plugs that originally came in the car. When I had my stock L98 in my 89 vette I tried different expensive plugs and came back to the stock AC Delco plugs because I noticed no difference at all in the more expensive plugs.. GM should know what works best , they built the car....WW
Burning Brakes
Joined: Jan 2012
Posts: 1,131
Likes: 3
From: Mission, Kansas
My suggestion is to run the plugs that originally came in the car. When I had my stock L98 in my 89 vette I tried different expensive plugs and came back to the stock AC Delco plugs because I noticed no difference at all in the more expensive plugs.. GM should know what works best , they built the car....WW
Race Director
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
I have NGK TR55IX plugs. They have been in for 20K and two autocross seasons and still run excellent. If your engine doesn't use any oil and runs fine, go with an Iridium plug as they will last a long time. In the past, some guys have had bad luck with AC Delco professional plugs as they are double platinum and the pucks sometime fall off giving you a huge gap.
