Spark Plugs
Senior Member
Joined: May 2005
Posts: 500
Likes: 0
From: greenville, OH
Car: 86 Firebird, 2002 Monte Carlo, 91 v
Engine: 350
Transmission: 700R4
rapid fires perform anybetter with a stock hei? I used to have them in my fiero that was mostly stock. I liked them, but I don't know if I could tell a difference.
Supreme Member
Joined: Dec 2004
Posts: 1,204
Likes: 0
From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
you will not feel anything unless you car has big power or your plugs are bad and you replace them with rapid fires. I put them in because i have headers and they will last longer then stock ac delco. i hear good things about them all the time
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Supreme Member
iTrader: (1)
Joined: Aug 2004
Posts: 2,122
Likes: 1
From: colorado
Car: 1992 Trans/am convertible
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.73 drum WS6
I used boch 4 tip ones and they were great. Now I am on my AC delco set and they are good but not as good as bosch.
Will try to use the rapid fire next.
Will try to use the rapid fire next.
Member
Joined: Sep 2005
Posts: 272
Likes: 0
From: Yuma, Arizona
Car: 1991 camaro RS
Engine: 350,vortech heads,zz4 cam,3:73 posi trac,edelbrock carb,wiend stealth intake,raven mufflers,hooker supercomp shorty headers and y-pipe.
Transmission: th700r4
Champion copper plugs is what I have, no problems yet
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