Quote:

I would use the NGK R5671A-7...It's what I use with my edelbrocks (or a -8 for a little colder plug).




70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133