key4

iTrader: (10)

Im trying to figure out if I need a hotter plug for my motor. Its a LQ4 with around 10:1 compression, 244/250 .612 .620 with 113lsa, patriot 317 heads milled, pro systems carb(I got the build sheet). My problem is that Im running real rich. I dont know alot about carbs and tried to play with the air screws but I was told that it should be close out of the box. Im running a ngk R5671A-8 part number 4554. Its has fouled this set so I was just going to get someone elses thought before I go buy a new set. I checked the plugs and they are real black but its like carbon black not a wet black.

Roller406Bu

iTrader: (1)

mine runs fine on tr6's...

key4

iTrader: (10)

thanks, Im new to this and thats what I run in my camaro is tr6's. I just wasn't sure about the plugs for the LQ4's. What heads are you running on your 6 liter?

Pop N Wood

iTrader: (1)

Hotter plugs won't fix it running rich. You need to get your carb sorted out first.

81 Camaroman

get your carb leaned out and properly tuned you should install a wideband air fuel meter to monitor the carb then use pt# 4177 ngk tr6 plugs

key4

iTrader: (10)

thanks, yea I think I got it leaned out alittle. The fuel level was way too full in the glass eye. It dont seem as rich as it did. I was gonna get a wideband or get someone that has one. Thats what I was wondering if the plugs I had was good for my application or should I go with something a little hotter. Im gonna get the carb right just wondering what plug I should use.