Destructimus

Hi I am almost ready to hook up my nitrous kit, but I want a specific recommendation on what plugs to use. I have a blaster 2 coil, am replacing my 6al with a digital 6, msd 8.5mm wires, and for fuel I have a walbro 255lph pump with an afpr and 30# injectors that have the pulse width modified with a prom adapter I bought through TPI parts. I know I need a few heat ranges colder, but I'm hoping I could get a part number or link from one of the savvy veterans here lol. Thanks a lot.

chevymec

iTrader: (5)

I use NGK 8 but dont remember the exact number of the plug.

Destructimus

NGK 8? Is 8 the heat range on them? Sorry, I don't know much about plugs... here is a link to jegs.com's spark plug selectionL: http://www.jegs.com/webapp/wcs/store...10391_-1_10359 maybe you can point them out? Does anyone else have any recommendations? Not saying yours is bad, chevymec, but a second opinion would be good.

Reputation7

iTrader: (3)

ngk tr6

xfactor200289

iTrader: (10)

I use the autolite racing plugs #12

Destructimus

It seems like these are the only ngk plugs that are made to fit my engine:
http://www.ngksparkplugs.com/part_fi...uv/results.asp

They all seem to be a heat range or two too high. Did you have to shim and re-gap those tr6's when you put them in? I might just go with the autolite because I don't want to mess with that if I do, even though NGK seems to be recommended over and over.

Destructimus

Eh I have the next two days off to change them and do a compression test so I just picked up some AC Delco plugs at Auto Zone that were a heat range colder than stock. Any objections?

dualphoenix

i'm running a UR5 or #2771 and retuning of carb was needed

Reputation7

iTrader: (3)

ngk tr6

vipershark11

iTrader: (6)

i had NGK UR6's which if i remember correctly are 2 heat ranges cooler which is good for a big shot and drove normal without nitrous. theyre the v-groove plugs. i ran a 150 shot on them for a couple years and no problems. even after i ran a bad nitrous tune and melted one that cylinder kept firing believe it or not. basically go to the parts store and ask for 2 heat ranges colder plug thats meant for your car. acdelco has some i used to have before i changed my heads that i wouldve trusted with nitrous.

lt1z350

iTrader: (2)

go one plug range colder than stock and gap at 40 ths and will be fine.

Destructimus

So I want to gap it at .005" more than stock? I'm glad I had a lazy day and haven't put them in yet lol.

Reputation7

iTrader: (3)

dude.

ngk tr6
gap at .028


trust me on this.

actually lets go ahead and get this started. why does everyone think they need a huge gap?

and let the laughs roll in.

Destructimus

I swear though when I looked at the specs on the ngk tr6, the reach was like .25" too long. From what I understand about gap though, a smaller gap will create a smaller but more consistent spark and a larger one will creat a larger but less consistent spark. You would think that a higher quality ignition system over factory would allow to use a larger spark, but it probably isn't necessary. I think I'm just going to split the difference between you guys and just leave the plugs at what I've already gapped, which is stock. Thanks for your input.

Reputation7

iTrader: (3)

whats the point of the larger gap? i hope no one thinks they will get power out of it.

now indexing the plugs is worth a good bit of power.