I recently got hooker 2055 and am installing them now. I am on the search to find a short plug to use since I hear changing plugs with these headers is a pain in the ace. Anyway I ended up getting those Accel shorty plugs designed to be used with headers, or so the box says. I see everyone was recommending the 276s. When I went to pick up the plugs at the local autostore I got the number mixed up and got the 576s. My question is are the 276s plugs any shorter? My understanding is that the 276s plug runs cooler than the 576s. Is this correct? Can I run the 576s or is it too hot of plug to be using with the L98? I don't want to burn anything up. If anyone can recomend another shorter header plug I would be glad to hear it. The total length of the 576s is 2 & 5/8 inches.

 

It sounds to me like you've got the right ones. Just take a pair of pliers and tighten the caps on the wire end of the plug real good so they don't come loose on you. I use a wrench on the plug while I do this so I can snug them up real ggod. You also don't need a hotter plug unless you've got high compression, nitrous, etc. You should be okay.

FWIW, the NGH plugs are shorter too.

 

well if you were useing nitrous you would want a colder plug.

 

You could also get an $5 modified spark plug socket off of ebay that will allow you to run normal length Delcos. I wouldn't trust the Accell shorty plugs.

 

I've been trusting them since 1995. I've had the terminal unscrew on me, but that was more due to the plug wire clip not holding on tight rather than anything I'd fault the plugs for (always the same cylinder, stopped when I smashed down the clip a little). Since installing new 276S's and new Summit 8mm wires 13 months ago, I haven't had any problems whatsoever. Oh, I did make sure they were on tight, using pliers as suggested above, before they went back in this time.

 

Interesting. Maybe those who had problems didn't make sure the terminals were on tight before they installed them. I went with the Bosche plugs at the time which were on par as far as shortness is concerned. Little did I know I had made an even bigger mistake with my selection.

 

I've run the Accel shorties and they simply ran like garbage. My personal experience.

 

spark plugs have virtualy no influence on how the motor runs. all you can do is put the correct plug in the motor. putting the wrong heat range in means that the plug will not last as long. i used to be an ngk dealer and people always were asking me "i want to get a hotter plug, so i can get a hotter spark, what plug should i use" i got so tired of trying to explain the idea behind heat range that i stopped and just started telling them, look this is what you need, use this. a spark plug has 3 jobs,
1 remove heat from the chamber
2 ignite the mixture
3 live in the conditions of the chamber