Spark Plug? for GT40 Heads...

[MY 85 GT]

Ok i just bought a set of GT40 heads not P .Im running a blower so im looking
for a step colder plug what are you guys running?...Any help would be great thanks...

 

[tannerc91gt]

Autolite 23s would do ya good, I run 2 steps colder for nitrous and the 23s work good for me

 

[MY 85 GT]

Autolite 23s would do ya good, I run 2 steps colder for nitrous and the 23s work good for me

I thought the GT40 heads took autolite 765's ....and i can use 764's for one step colder plug?..you can use autolite 23's in GT40's????

 

[RydeOn]

Guys, sorry but these are way off.

The correct plugs for supercharged cobra heads are Autolite 2544