Apr 13, 2004 #1 R roderick New Member Joined Oct 9, 2003 Messages 143 what would be the best spark plug to run in a low 11 to high 10 sec turbo buick.
Apr 13, 2004 #4 V V8Killer GM speed junkie Joined Nov 22, 2001 Messages 329 Delco CR42TS, one heat range colder than the 43's