Old style Champion GN1 spark plugs

[stagemonster]

Talked to tom at champion and he says to run autolite 103s. What other plugs are able to be used with these heads?

 

[forcefed3.8's]

I run AC R42LTS. I think they are stock in the TTA's.

 

[whitehot1]

I'm running NGK racing plugs R5724-8 p/n 7317 these are non-resistor plugs and i've also used NGK TR5 p/n 2238 resistor plugs.

The NGK TR5 plugs are available at the local Advance Auto parts store but the racing plugs have to be special ordered by them but it only takes a day or two depending on where they have to get them from.