Best Spark Plugs
#1
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Best Spark Plugs
I have been using AC Delco's for a few years now, but am currently thinking about going to Bosch +4 plugs. I hear they are "suppose" to be better, but is there really that much difference between plugs?
Any opinions/suggestions would be appreciated.
Thank you!
Any opinions/suggestions would be appreciated.
Thank you!
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Car: 1985 Chevy Camaro IROC-Z
Engine: 350ci from 79camaro
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Lock at the top right of this page and click search. This is so old as a subject!
Si.
ps. ac delco or ngk are what you want!
Si.
ps. ac delco or ngk are what you want!
#4
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Car: 90 Trans Am
Engine: 305 TPI
Transmission: T-5
I asked this question awhile back. I got the Platinum 4's 3 weeks ago, installed them, and my car wouldn't run right. I had a mechanic take them out and they looked like they were already wore out. Look at the posting "Bosch Lied". I started this thread and you'll see why.
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Car: 1989 Firebird Formula
Engine: 383 Stealth Ram
Transmission: 700R4
Axle/Gears: 3.73 9 bolt Posi
Thanks for the input everyone.
TransAmman87, sorry to hear about all the trouble you had... I'm not going to risk puttin the +4's in my car now!
I did read about some people putting regular AC Delco plugs in their car and others putting RapidFires in their cars. Is there a noticeable gain by going with the RapidFires over the regular AC Delco plugs?
TransAmman87, sorry to hear about all the trouble you had... I'm not going to risk puttin the +4's in my car now!
I did read about some people putting regular AC Delco plugs in their car and others putting RapidFires in their cars. Is there a noticeable gain by going with the RapidFires over the regular AC Delco plugs?
#6
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Car: 1984 Trans Am WS6
Transmission: 700r4 Highly Modified
I could not tell a difference between the regular AC Delcos and the Rapid Fires. The rapid fires cost more. I did notice a difference with the Accel U Groove Header Plugs I used last time though.
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Car: 1991 camaro Z28
Engine: LS1
Transmission: T56
NGK makes some good stuff, thats what the 4th gens seem to be using and over on the ls1tech.com board and those guys over there seem to really know there stuff.
#12
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There's something to remember when buying spark plugs: the harder the metal the less conductive the spark energy transfer is. So you get a slower, smaller spark with the harder metals. Iridium is the hardest, followed by Platinum and last is copper. The harder metals outlast the softer ones, but you lose performance.
Something to keep in mind anyway.
Something to keep in mind anyway.
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Car: 1992 Z28 1LE
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Transmission: T5
iroc22: but what about their claims that with a smaller center electrode, less voltage is required to jump the gap. Wouldn't that therefore "even" things out when compared to the material being less conductive than copper? I checked out the NGK website a while back, and was also reading about how they had redesigned the Iridium spark plugs itself to prevent fouling. What are your thoughts on those?
iroc22, I'm asking these questions out of a serious, learning inquiry. I'm not a believer or "gimmick" plugs, but I can't help but wonder that as time grows on us, so would technology.
iroc22, I'm asking these questions out of a serious, learning inquiry. I'm not a believer or "gimmick" plugs, but I can't help but wonder that as time grows on us, so would technology.
#14
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Car: 91 Z28
Engine: Forged 383
Transmission: Pro-built 700R4
Plugs are plugs, it's plain and simple. As long as you get the end gap and heat range right according to your engines compression ratio, none of those fancy platinum or iridium plugs will give you any extra hp, they'll just last longer. I know because of a friend who's been on the dyno with his race car over a 1000 times, has found this out to be true.
#15
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Originally posted by age
iroc22: but what about their claims that with a smaller center electrode, less voltage is required to jump the gap. Wouldn't that therefore "even" things out when compared to the material being less conductive than copper? I checked out the NGK website a while back, and was also reading about how they had redesigned the Iridium spark plugs itself to prevent fouling. What are your thoughts on those?
iroc22, I'm asking these questions out of a serious, learning inquiry. I'm not a believer or "gimmick" plugs, but I can't help but wonder that as time grows on us, so would technology.
iroc22: but what about their claims that with a smaller center electrode, less voltage is required to jump the gap. Wouldn't that therefore "even" things out when compared to the material being less conductive than copper? I checked out the NGK website a while back, and was also reading about how they had redesigned the Iridium spark plugs itself to prevent fouling. What are your thoughts on those?
iroc22, I'm asking these questions out of a serious, learning inquiry. I'm not a believer or "gimmick" plugs, but I can't help but wonder that as time grows on us, so would technology.
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