which plugs are best to use

**GatorSS** · 09-10-2008, 11:54 PM

Originally Posted by Sarge

...
1. Gap must be set to your particular motor/mods/tune.
2. Coil firing "power" is what makes the difference.
3. Wires with the lowest ohms resistance make the best power and smoothest running motor.
4. Cheap plugs gapped properly running at the end of a quality coil/wire setup are just as good as expensive plugs in the same environment.
5. Change your plugs when they start to "pit". Get a magnifying glass and look.

.... You may now resume your regularly scheduled Internet forum war.

Best advice in this thread. #2 is the BIG one! Pay close attention to #4 while engaging in the spark plug war. The difference here is that the expensive plugs (i.e. iridium) will last longer than the cheap ones, but the performance is virtually identical (while both are in good condition--the difference being how long a plug stays in good condition).

**GatorSS** · 09-11-2008, 12:04 AM

Originally Posted by ls1ya

the e3 diAMOND fire pick up at least 3-5 horsepower on an ls1. saw it on horsepower tv when they dynoed a ls1 with headers, cold air this morning.

Originally Posted by matman40

I just installed a set of E3s in my 04 goat. The guys on Horsepower TV uses them and they got almost 5 hp after installing them. I like them. Anyone else??

Originally Posted by LS2Tuner

E3'S ARE A WASTE OF MONEY!!!
...

Originally Posted by matman40

I said earlier that I tried a set of E3's and I like them. Wrong..I been running them for about a month and they suck. it seems like I get worse mileage and the power is not there. YES they are a waste of money. I'm going with TR55's.

E3 = bad news! I have never seen electrodes wear so differently in a set of plugs than with E3. Replacement set had similar extremely wide variation of electrode wear. If you insist on using E3, then restrict it to a single cylinder engine and check the plug often--then again, engine performance will tell you when the plug has worn past its proper range.

**GatorSS** · 09-11-2008, 12:08 AM

Originally Posted by Boat

I just changed my plugs today and boy are my arms sore. ... What a pain in the @$$ that #8 plug was...
...

#8 will take less than 5 minutes if you change it from underneath. It will take longer to lift and then let down the car than changing that #8. #6 is easier from underneath as well.

**Boat** · 09-11-2008, 09:42 AM

Originally Posted by GatorSS

#8 will take less than 5 minutes if you change it from underneath. It will take longer to lift and then let down the car than changing that #8. #6 is easier from underneath as well.

I jacked the car up and could not even see where the plug was. I could not even fit my arm in there if I wanted too. Do you have to remove the exhaust or something. I may do that next time...

Total start to finish was about 3 hours. I had a few interruptions from the wife and kids though...

**transAMchubby** · 09-13-2008, 09:33 AM

i didn't really see how it would be possible to replace #8 when i had my stock exhaust on there. i did a plug/wire change at the same time i did LT headers. there is much more space there now to change plugs with the LTs on. I do #8 from underneath.