plugs for gn1 heads

[malibuick231]

what plug can I run in gn1 heads that are the same as ur5 ngk plugs. thanks for any help.

 

[STP]

Ewww...I know this one..

Lawnmower plugs

 

[Bad as L]

Try a TR-5....its a taper seat, .708 reach

 

[malibuick231]

thanks bad as l i was beginning to wounder if anyone was running these heads.

 

[meach13]

you need some diesel plugs for that car lol j/k

 

[10SV6]

Anybody have experience with the TR5 in a race application ? They cross over to a hotter heat range than the Autolite 103's.