gt40p what size chamber?

[allballsmustang]

im trying to choose pistons and i need to know what size chamber the gt40p heads have so i can get the right compression ratio....anyone know how big they are?

 

[88mouse]

65 if i can remember right. They are big i know that. But you can have them milled down.

 

[Mr. Rustypwnz]

60, stock is 65.

 

[allballsmustang]

i think that sounds right...