Spark Plugs????

[mrdarthvader]

Hey guys....I have a bone stock unmolested 87 GN with 56000 miles of life...I'm going to change the plugs..What plugs should I use...what should they be gapped at...What were the OEM plugs used when these GNs rolled off the assembly line....THANKS

 

[Boost231]

cant remember the factory plugs but i would put NGK UR5's gaped @ .32

 

[Just a Six??]

Use Delco CR42 or CR43 even Autolite 23 are good but not the NGK!! Flame Suit On!!!

 

[Just a Six??]

Since you new to the cars do yourself a BIG Favor & go here & read these 2 sites!! Over & Over until you know them well!
Trust Me!! Enjoy the learning!!!

Vortex Turbo Buick Performance Turbo Regal Web Site

 

[Boost231]

i use to use AC delco's there not bad but i like NGK's better

if you do get the AC delcos get AC CR43TS

 

[Just a Six??]

i use to use AC delco's there not bad but i like NGK's better

if you do get the AC delcos get AC CR43TS

Gap them on the tight side. I like 32 & when racing use a Tight 30 gap.

 

[mrdarthvader]

Thanks for the replies guys..........

 

[Boost231]

so your getting the NGK's right.

 

[mrdarthvader]

hey Boost...I think i am gonna stick with the AC Delco...I pulled one and that is what was in there....Going to try the CR43ts....everyone has there own opinion, I guess trial and error and form my own...thanks buddy

 

[Boost231]

hey Boost...I think i am gonna stick with the AC Delco...I pulled one and that is what was in there....Going to try the CR43ts....everyone has there own opinion, I guess trial and error and form my own...thanks buddy

great post. thats what i like to hear. i and others give our input but the decision of what you want to do is up to you. good luck.

 

[garrett]

spark plugs

I'm going to try the NGK iridium plugs they have been selling on Ebay