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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-23-2007, 12:05 AM   #31
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605'* are at walmart for like $1.50 each

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APPLICATIONS:
1995-2003 Bonneville with 3800 Series II engine
1996-2002 Camaro with 3800 Series II engine
1996-2002 Firebird with 3800 Series II engine
1997-2003 Grand Prix with 3800 Series II engine
2004-2005 Grand Prix with 3800 Series III engine
2000-2005 Impala with 3800 Series II engine
1998-1999 Intrigue with 3800 Series II engine
1996-2003 LeSabre with 3800 Series II engine
1998-2000 Lumina with 3800 Series II engine
1998-2005 Monte Carlo with 3800 Series II engine
1995-1999 Oldsmobile 88 with 3800 Series II engine
1996-1996 Oldsmobile 98 with 3800 Series II engine
1995-2003 Park Avenue with 3800 Series II engine
1995-2004 Regal with 3800 Series II engine
1995-2005 other applications with 3800 Series II or Series III engine
Autolite® Copper Core Spark Plugs feature a copper core center electrode sheathed in high chromium-nickel alloy for superior heat dissipation and durability. The longer insulator nose provides a longer path to control fouling deposits, and the mixture of nickel and copper-glass seal bonds the insulator, terminal post and center electrode together, assuring full voltage. In addition, the chromium-nickel alloy ground electrode resists gap erosion.

We offer these spark plugs in three different heat ranges depending on your level of modifications. Our recommendations are as follows:
Use the Autolite® 605 spark plugs (one heat range colder than stock) if you have a 3800 Series II or III engine engine with up to 6 pounds of boost. At this level, we recommend reducing the spark plug gap to .055", or .035" with nitrous oxide.
Use Autolite® 104 spark plugs (two heat ranges colder than stock) if you have a 3800 Series II or III engine with 6 to 12 pounds of boost. At this level, we recommend reducing the spark plug gap to .050", or .035" with nitrous oxide.
Use Autolite® 103 spark plugs (three heat ranges colder than stock) if you have a 3800 Series II or III engine with 12 to 18 pounds of boost. At this level, we recommend reducing the spark plug gap to .045", or .035" with nitrous oxide.
IMPORTANT NOTES:

Autolite® Spark Plugs are sold in eaches. If you want a set of six, please order a quantity of '6'.

Prior to installation, clean the threads of the spark plug holes. We recommend you coat the threads of your Autolite® Copper Core spark plugs with anti-seize, and install them hand tight plus 1/16th of a turn, or torque them to 11 to 18 foot-pounds.
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Old 01-23-2007, 01:21 AM   #32
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I read through some articles in the search and I'm going to consider the 605'*... but I'm also not a supercharged engine. It seems like most of the proven facts of the platinums were proven on supercharged engines... although the info on waste spark ignition systems is very interesting. Agh, too much information to learn with a new engine/car to get to know. I have absolutly no clue on heat ratings, especially on an n/a engine and in the northeast colder climate when its up in the air if I'll be moving south after May. Looks like the wires from NAPA are the way to go though. I guess I'll be going down the street to NAPA to ask some questions. I've never had to deal with this type of engine before. My dad has two cars with 3800'* (one'* an '02 Bonne) in them but hasn't had to deal with plug/wire changing yet unfortunatly. I guess anythings better than the hessitating lag to get to 30mph that I have now (not to mention the bad gas mileage).

~Dave
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Old 01-23-2007, 08:04 AM   #33
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Dave... the issue with Bosch plugs is they don't hold up well in a waste spark setup. Our cars use a waste spark setup. This means that every time the #3 cylinder coil fires, it also sends a spark to the #6 cylinder. This is why we don't have 6 individual coils.

Therefore each spark plug gets fired an additional time each rotation of the motor. Bosch has documented that their plugs break down quickly in this system.

As for using a premium plug versus copper. The supercharged engines do run better on copper based plugs. The naturally aspirated engines also run good on the copper plugs. If you are looking to spend a little more and want a longer lasting premium plug, I would suggest either the NGK Iridiums or the AC Delco Iridums (BTW NGK makes the AC Delco plug). Both are great plugs and will treat you right.

The platinum was designed to last longer than a copper and the iridium is made better than the platinum.
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Old 01-23-2007, 04:49 PM   #34
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Thanks for explaining, things are starting to click more now. I think the only other question I have then is if the Bosch plugs wear down quicker with our set up shouldn't that be true of any platinum plug? So i should either then just get copper or iridium?
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Old 01-23-2007, 04:59 PM   #35
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Copper or Iridium are the suggested ones..yes.
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Old 01-23-2007, 05:24 PM   #36
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alrighty, looks like i'm serching for NGK iridium plugs and the NAPA wires. Hopefully I'll find them and hopefully this problem will be gone on Thursday when their installed! You guys have helped me a ton! I really appreciate it!

~Dave
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Old 01-23-2007, 07:21 PM   #37
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wow, the ngk iridium plugs are a lot more expensive than I thought!! 6.96 each or 9.99 for the laser iridium ones. My research I've looked at pretty much all says that it'* very probable to get 100,000 miles out of the iridium plugs which I guess would make them worth the cost, not to mention saving the pain of putting them in. Is it really safe to leave them in for 100,000 miles? I'd get the 6.96 plugs if I did get iridiums. I'm a strick believer in you get what you pay for but I'm not sure how good the plugs would be for the last 20,000 miles or so of the 100,000.... I guess even if the iridiums get 50,000 it'* still worth it considering that the coppers get I think 10-15,000 right?

~Dave
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Old 01-26-2007, 06:00 PM   #38
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I ended up buying copper plugs and belden wires. It turns out though that one of the coils was bad and needed to be replaced. The car was running horrible and it smelled like the engine was burning. Now that I'm running the Bonne at top potential I'm very suprised at the difference in acceleration, etc. Thanks for helping me out.
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