I have a 66 GTO with 389 Tri Power. it has a mild cam with headers. Could any one suggest what would be the best spark plugs to use. I have been running R45S plugs in it.
I have a 66 GTO with 389 Tri Power. it has a mild cam with headers. Could any one suggest what would be the best spark plugs to use. I have been running R45S plugs in it.
I am going to try the Autolite 85 plugs . I have been gapping the others at 35 I guess these should be gapped at 35 also??
mike nixon
11-04-2000, 12:09 AM
autolite and yes gap them the same.mike