Best Spark Plug?
Race Director
Joined: Apr 2001
Posts: 19,329
Likes: 16
From: Saint Augustine, FL
Mid-TN Events Coordinator
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Originally Posted by mph1972
I have ran a few different plugs and fnd myself returning to the AC Delco setup. Good for the 100K and the tips don't back out (NGKs have screw on tips and I hate that).
NGK 55s are fine, but not my #1 choice.
Thread Starter
Drifting
Joined: Sep 2006
Posts: 1,383
Likes: 1
From: Newport News va
Originally Posted by gablkc5
Have any of you used the Bosch +4 plugs? I've had very good luck with them in other cars just curious how they work for the vette.
Race Director
Joined: Apr 2004
Posts: 16,135
Likes: 5
From: Newberry FL
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by JR_VETTE
I think the correct term is they 'used to have' screw in tips. My TR55ix's don't, and I've heard the regular TR55's also don't have screw in tips now.
Micah
