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Joined
Aug 21, 2006
Messages
302
Just wondering what everyone's thoughts were on running ac Delco plugs in a 87 gn iv herd some people running autolite plugs and what not I run ac Delco what do you guys think are the best plug to run?
 
Your choice, all work well. AC Delco R43TS, R42TS for higher boost. Autolite 24's, or use 23's if running more than 20lbs. boost.
I'm using NGK UR5's right now in the GN.
 
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