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Old 01-26-2010, 12:33 PM   #1
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Best/Recommended Spark Plugs

Over the years I have bought good and bad spark plugs. I once bought the Bosch 4+, the ones with the four prongs and they were great on fuel eceonomy but sucked in power. I have used the Split Fires for many years and have gotten good results but I still have that nagging question about the best sparks to use.

Also, I have heard from different mechanics as to which sparks to use and get varying answers. So, I will ask the question here and see what happens:

What are the best/recommeded spark plugs for a 92 Camaro RS (305 TBI)? Hopefully, I can put this question to rest. Thx for any info in this!
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Old 01-26-2010, 12:38 PM   #2
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Re: Best/Recommended Spark Plugs

get some ac delcos and call it a day.
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Old 01-27-2010, 05:06 AM   #3
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Re: Best/Recommended Spark Plugs

Usually when you ask for an opinion on the best spark plugs, you'll get a hundred different replies. My personal one is I've never had decent results with any of the Bosch platinum style plugs. I experienced the same result as you, lack of power. They seem to work good in 4 cylinders, but tons of people complain about them when they run em in a V8. Sh*tfires are just overpriced gimmickry. I had the same motor as you, 305 TBI. I ran the AC plugs in it for a while, and they worked fairly decent. However, I did notice a slight improvement when I switched to Champion RV17YC's. Car had a little better pickup and power with them. Keep in mind those are just the standard, run-of-the-mill Champion plugs(Copper Plus), no exotic metals, multiple tips, etc. I don't know how well they work in the TPI motors, but they sure kept my lowly TBI happy! I changed them about every 45K or so. If you want plugs that'll go 100K without problems, go with the AC Delco Rapidfires. They're a bit spendy though.
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Old 01-27-2010, 05:13 AM   #4
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Re: Best/Recommended Spark Plugs

used 8 different kinds and best one was accel U-Groove blister pack best ones i ever bought made a .25 difference on time records compared to my second best times using V power spark plugs trust me worth every pennie
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Old 01-27-2010, 10:24 AM   #5
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Re: Best/Recommended Spark Plugs

Thanks for the feedback! Also, anyone ever used the iridium or more "exotic" plugs and if yes, was it worth their price?

So, to recap for those maybe looking into buying sparks for their camaro here are the top choices so far for a 305 TBI

Top Choices:
1. AC Delco (though no explanation given)
2. AC Delco Rapidfire
3. Accel U-Groove
4. Champion RV17YC's

Poor Choices:
1. Bosch Platinum
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Old 01-27-2010, 10:36 AM   #6
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Re: Best/Recommended Spark Plugs

I've had nothing but good experience with NGKs. I use them in all of our vehicles when possible...from Z06 and Formula to LeSabre and Sierra.
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Old 01-27-2010, 10:46 AM   #7
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Re: Best/Recommended Spark Plugs

Never heard of NGK but I'll add it to the list. I'll check out NGK. Thanks.

Top Choices:
1. AC Delco (though no explanation given)
2. AC Delco Rapidfire
3. Accel U-Groove
4. Champion RV17YC's
5. NGK

Poor Choices:
1. Bosch Platinum
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Old 01-29-2010, 11:27 PM   #8
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Re: Best/Recommended Spark Plugs

Quote:
Originally Posted by B'tx View Post
Never heard of NGK but I'll add it to the list. I'll check out NGK. Thanks.
You can get NGKs at most car-parts stores or online vendors. I usually get them from Summit and stock up when I am buying other stuff.

The TR-6s worked especially well, but they are a colder plug that I used in a nitroused 382...
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Old 01-31-2010, 12:13 PM   #9
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Re: Best/Recommended Spark Plugs

I've got Champion RV19YC's in mine! I have heard that my 85 Z28(305, 4bbl) is supposed to be running RV17YC's. I'm a bit worried that the heat range is wrong with these plugs(RV19YC's). Anyone else used the 19's over the 17's?
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Old 01-31-2010, 04:37 PM   #10
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Re: Best/Recommended Spark Plugs

Unless you've got a problem, or a different configuration then stock, your engine is going to perform just as well on the recommended OEM AC Delco plug as any of the gimmick plugs.
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Old 01-31-2010, 08:09 PM   #11
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Re: Best/Recommended Spark Plugs

Which Accel U grooves are you running? I'm about to do my spring tune up on my camaro and I was looking at the accel plugs. I've never heard anything but good stuff out of them.
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Old 02-18-2010, 08:24 PM   #12
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Re: Best/Recommended Spark Plugs

my car burns a lot of oil and the block learn is sitting at 158. injector pulse width is 2.48ms but it misfires, lack of power stumble popping at 4200 rpms. i am running champion plugs now gapped .35. so my question is how can i benefit from running different plugs. would a different heat range or better plug withstand oil fouling and what not. also what heat range.
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Old 08-06-2011, 10:50 PM   #13
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Re: Best/Recommended Spark Plugs

Quote:
Originally Posted by B'tx View Post
Never heard of NGK but I'll add it to the list. I'll check out NGK. Thanks.

Top Choices:
1. AC Delco (though no explanation given)
2. AC Delco Rapidfire
3. Accel U-Groove
4. Champion RV17YC's
5. NGK

Poor Choices:
1. Bosch Platinum
No disrespect, but you really have never heard of NGK? Its one of the biggest plug companies on Earth. Again, no disrespect but what year were you born in? That might shed some light on it.
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Old 08-06-2011, 11:37 PM   #14
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Re: Best/Recommended Spark Plugs

Quote:
Originally Posted by Drew View Post
Unless you've got a problem, or a different configuration then stock, your engine is going to perform just as well on the recommended OEM AC Delco plug as any of the gimmick plugs.


It ain't broke... you finish the rest
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Old 08-07-2011, 11:07 AM   #15
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Re: Best/Recommended Spark Plugs

Quote:
Originally Posted by mikesanto70 View Post
No disrespect, but you really have never heard of NGK? Its one of the biggest plug companies on Earth. Again, no disrespect but what year were you born in? That might shed some light on it.

Holy 18 month bump batman
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Old 03-08-2013, 03:39 PM   #16
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Re: Best/Recommended Spark Plugs

Bump
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Old 03-08-2013, 04:14 PM   #17
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Re: Best/Recommended Spark Plugs

NGK makes AC Delco plugs.
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Old 03-08-2013, 04:30 PM   #18
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Re: Best/Recommended Spark Plugs

Why would you revive this thread? Its all subjective. Let the dead horse rest in peace.
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Old 03-08-2013, 04:59 PM   #19
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Re: Best/Recommended Spark Plugs

Quote:
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Why would you revive this thread? Its all subjective. Let the dead horse rest in peace.
Because the tgo search bar is awesome
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Old 03-08-2013, 07:43 PM   #20
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Re: Best/Recommended Spark Plugs

:facepalm:
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Old 06-01-2013, 08:31 AM   #21
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Re: Best/Recommended Spark Plugs

Use ac delco. Bosch and shitfires are for 4 cylinder hi-revving rpm engines. Chevys use ac delco parts for a reason and if your car runs good (not burning oil or coolant) you'll easily get 100,000 miles out of them
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Old 06-01-2013, 08:31 AM
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