I have a 96 3.8 and the gap on the plugs are .60.

 

Whatever you do, don't try to gap iridium plugs! They come pre-gapped and operate at a different temp range. I learned the hard way and broke a tip. doh!

 

Stock gap, NGK TR55's for bolt-on to stock engines, TR6's for nitrous/blown apps. For wires, stock is fine, msd is ok as well. DO NOT GET MSD COILS however, they are crap, the wires are fine though.

 

Here's what the Tom Henry Racing crew said about the MSD Coils, Wires, and Denso Iridiums:
http://www.camarohomepage.com/project/part3.htm

" We got the ignition system up on the bench to install MSD Blaster Two-Tower Coil Packs (PN 8224) for the GM "waste-spark", distributorless ignition systems used on 3800s. The MSDs put out up to 40kV which, when they're used in an inductive ignition application like the THRS V6, is only slightly more than the OE coils. Where the Blasters are an advantage is during high-load operation at engine speeds beyond where the stock coils normally operate. Our project's engine is soon to get a rev limit higher than stock and future mods, such as nitrous oxide injection, will put a higher load on the ignition. Better materials, such as higher-quality copper wire, and more robust construction means the MSDs will be more reliable when the combination of higher rpm and higher ignition loads typical of a modified engine are present. These coils, along with MSD Super Conductor plug wires installed previously, give us a performance margin we like.

Our ignition mods are: a set of MSD coils, which are capable of higher spark output, and a set of MSD Superconductor plug wires. Image: CHpg Staff.

Superconductor 8.5-mm spark plug wire was originally devised for use on racing engines in cars with 2-way radios. It has a low resistance per unit length--typically 50 ohms per foot--but a high level of ignition noise suppression.

We installed a fresh set of Denso Iridium Power IT20 spark plugs. We've used the IT-20 since the beginning of the Camaro Performers magazine version of this project in 2005 and always have had good results. It is a heat range colder than stock and its iridium tip is more durable but has less resistance than platinum. Its small, 0.4-mm center electrode and tapered ground electrode give the spark maximum exposure to the incoming, air-fuel charge. In short, we think the IT-20 is the best spark plug choice for 3800s in street high-performance and mild racing applications."

 

I hate plug # 6, it is the devil.

 

i am doing that tomorrow this was helpful enough.. thanks...

 

The only one I need to grab underneath is the #6 and even then I could grab it from the top but it is a tight area. Removing the heatshields is key.

 

can someone repost a quick pic of the the heat shield that can be removed to help get to the plugs?

 

pretty sure whoever designed this car was trying to f**k with me.. three hours, only three plugs. this is ridiculous lol

 

Thanks for the link, it was too easy! The only thing different for me was when I press the Schrader valve to purge it, nothing came out. Everything else was spot on.