NGK TR8IX Plugs

Do you guys stock NGK TR8IX (3691) plugs?

I bought them from texas performance when i bought mine , for some reason Triangle Speed Shop Loves running those plugs on the cars

Are those good for a stock lightning. I was told to use tr6

mruvio wrote:

Are those good for a stock lightning. I was told to use tr6

yeah they recommend those plugs highly. I was informed the TR6s are a horrible plug for the lightnings and harleys. It seems the TR6s are not any colder than the stock plug and need to be changed quite often especially when pullied or an upgraded blower. I wrote NGK today about becoming a dealer. If I do become a dealer I will stock these plugs and the 4177s

It seems everyone including the vendors on the lightning forums use the tr6 for every application. Who said they are not any good ?

Well RaceRage mentioned that the TR8 are the only plug he runs. I had a buddy who runs TR6s in his Harley truck and goes thru plugs before its time for an oil change. The TR6 plugs are a standard resistor plug. Something like a Lightning or a Harley would greatly benefit from an iridium plug.

I was just goin to buy the tr6

if you have a stock lightning I wouldnt see why you would. Im pretty sure tr6 is for pullied trucks

I was informed the TR6s weren't much if any colder than stockers.

Now goin to look for the tr8 and wait got drew hook up lol

Yah you guys tell me what you want and I will get it. I am going to try and keep what the demand is for. 4177s are always wanted so these would be good to keep for the LIghtnings and Harleys

Which ones are those

4177s are TR6s that GMs use. I am not sure if thats the same part number for the Fords too

By when can u get the tr8

I'll see if Clear Lake Speed has these and let you guys know.

After 4 days of "They'll be here this afternoon" O'Reilly's finally came through. I'll let y'all know what the TR6's look like after 7000 miles.

going to need some soon, i have the tr6's

Just let me know when u get the tr8

i use tr6 4177 in my mach and vette with nitrous and never had a problem. i do replace them when i change my oil but they are cheap.

Sorry guys i have been swamped at work then finishing up my motor as well

The TR6 is a good plug for what it is intended for, it IS a COLDER plug from stock but it is still a projected plug..

If u guys cannot reach me on here then PM me or call me at my shop 281-332-1092!