d_bone33

I am wondering if anyone on here could tell me really quick what spark plugs to buy, and where i can pick them up..i have heard a few different things, and i wanna know what yall think

Antigini-GT/CS

Copper is cheap, but you have to change them more often. If you don't mind spending a little more money and don't want to be bothered to change your plugs for a loooong time, go with iridium. Don't worry about platinum or anything with a +. Just be careful when you change our your stock plugs! Two piece plugs are junk.

d_bone33

do you have an actual name brand an stuf i could us?

Green96GT

NGK iridium Part Number 7554. one range colder.

Five Oh Brian

You mentioned SCer?? Does that mean Supercharger? If so, go with a colder heat range. Also, copper conducts electricity 10 times better than platinum, so a copper plug is a far superior choice for high cylinder pressures that come with power adders (blower, turbo, or nitrous). The downside is that copper doesn't last as long, so you can expect to replace copper plugs once or twice a year.

As you have a 2009, you have the updated heads/plugs which are much improved over the 2005 to 2008.5 plugs which were prone to breaking off during removal.

Green96GT

there are no copper plugs for the 2009 cars and 2008.5 cars. i ran into this when i was looking for plugs for my nitrous. the NGK plugs i mentioned above are a great plug at a good price compared to the brisk plugs.

Five Oh Brian

The 2008.5 to 2010 Mustang GT's do have an option for colder, copper plugs from Ford Racing. Click here. I've been using these plugs (the 3V0 model for 05-08's) successfully in my supercharged '07 GT.

They work best gapped at .045 (as shipped) if you have aftermarket (higher voltage) coils, or gapped around .030 if you still have the stock coils.

Antigini-GT/CS

NGK is a good brand. Champion seems to be riddled with complaints so stay away from that. And DO NOT go with the oem 2 piece plugs, no matter what you do.

Copper ftw.

Sabre

Many of us with the Roush M90 supercharger, are using the Brisk Silver 3VR14S gapped at .32 and seeing great results. They are one step colder than the stock plug, are a one piece plug and should be good to at least 500 flywheel HP. Beyond 500 HP, you may want to consider the 3VR12S which is 2 steps colder than the stock plug.

CO_VaporGT_09

What does a 'colder heat range' plug mean, physically or metalurgically on the plug itself. I understand the concept and the situations where they're desired, but what's actually changed to make them this way?

Sabre

I'm certainly not an expert on this subject, but here is what know about it. Internally in the plug, the composition of the alloy in the electrode can be changed and and they can change the length of the internal core...to allow for better heat transfer from the electrode and the plug itself, to the head. As a general rule, for every modification that adds 100 HP, you move one heat range colder.

Five Oh Brian

Gapping is incrediblly important, as well. With a supercharger's higher cylinder pressure, the spark is prone to blowing out and misfiring. So, many people gap the plugs tighter (.028 to .035 instead of the regular .045). This protects the spark with the weak 20K volts the factory coils produce, but is hardly ideal for creating the best flame propagation. The other solution is to run higher voltage coils. I bought a set of aftermarket coils that are rated at 45K volts (more than double the factory coils).

I found through trial and error with many passes at our local dragstrips this year, that higher voltage coils with the .045 spark plug gap is a much better solution than stock coils and tighter gaps. It was worth about 20hp, a couple tenths & mph in the 1/4 mile, and improved driveability.

charlierickman

hey.. a friend of mine suggested i get these spark plugs online. he says he got the same ones and that they're great.. but im just looking around for some feedback if i should even bother.

Green96GT

Those plugs are not copper. They are actually the NGK plugs I mentioned. When you order them from FRPP they come in a FRPP box but open it up and they are NGK.