krissoto

iTrader: (3)

I was running an autolite, ar94 but those were still a little to hot, I was gonna switch over to an ar92 but they were not in stock at the time and I wanted to get my car back out for the weekend, so I decided to try
NGK R5724-10 (stock number 7993). They are suppose to be a 4 step colder plug, and they are v notched. I have them gapped at .35 and I am spraying 100hp dry. Just wondering if anyone has had any opinion on them, good or bad.

camscam02

iTrader: (21)

way too cold of a plug and projected I believe

go with the BR6EF part number 3177, its on step colder, non projected and will work great with your 100 shot. if you step up to 150 go with the BR7EF part number 3346

dnkynrbk

iTrader: (34)

They are proj. I would go with the BR7EF Or the B8EFS

6point7s14

iTrader: (3)

Whats the 4 digit part number on the br8efs plugs

6point7s14

iTrader: (3)

Found it. 1049

krissoto

iTrader: (3)

well the ar94's were to hot, so I fig to be safe I would just try the 4 step colder. I am glazing the plugs. And yes you are correct about it being a projected tip plug.

Mike@HSW

iTrader: (6)

what motor are you running? compression, heads, etc? You should need anything colder than a heat range 6 or 7 on a 100 shot.

87silverbullet

iTrader: (11)

Just a little bit of info, but if you can't find a NGK br7ef at the parts store and need a plug in a hurry, the Autolite 103 is the cross reference for it and Wal-Mart carries them all the time.

krissoto

iTrader: (3)

stock ls1 with a cam and bolt ons. LT, LS6 intake, slp P+p tb, true duals, no cats, slp lid, k&n, tsp ms4, 42# inj, 25% underdrive, free mods, speed density tune, 350 turbo with 4100 stall w/ trans brake. a/f is good, made about 6 bottle passes on those plugs, and junked out on me and thats why i went with the colder plug. Even if you think the 4 steps colder is too much, I wouldn't want to go no less than say an ar 93 or even the
b8efs. This plug that I found is what is in the sticky up top, thats why I tried it, just have yet to hit the kit. Thats why i was looking for some opinions.

krissoto

iTrader: (3)

is the autolite plug you are refering to a non projected type plug?

87silverbullet

iTrader: (11)

Yup, used to use it back in my Buick Grand National days. Used to use a 104 when I would turn up the wick.

Chris@NitroDaves

The 8's ( 3 steps colder ) are still to cold a plug for you....I would get a set of the NGK BR7EF ( Stock# 3346 ) and gap them at 34.

krissoto

iTrader: (3)

thank you for the help guys. very much appreciated.

Chris@NitroDaves

Your very welcome