Which plugs for GT-40 heads?

[281pony]

im just now putting on my gt40 heads, the autolite 25's i have are too big.

they thread fine but the body of them is too big. which plugs are the right ones?

thanks

 

[PNY PWR]

AGSC-32C/ AGSF-32C Motorcraft. I think it depends on which GT40 heads you have. Actually the C or F appears to be the core material. Seems they're both the narrow plugs.

 

[281pony]

i have the gt-40 iron heads. not p

so autolite 32's?

 

[houstonstangguy]

no he is saying to get the motorcraft plugs not autolite. I had those iron heads but i can't remember what i used to use. I'd try the ones he said. they are only about a buck.

 

[SwAmPf0x]

Autolite 764's