APR Head Stud socket..?

[AcIdBuRn02ZTS]

Hey alls...

I'm pulling a motor apart that has ARP head studs installed... I havnt got the valve covers off at the moment... and am wanting to make sure I'll have the tools I need to get the head off....

What is the socket for the nut on the ARPs?

I did search and didnt find anything....

Thanks guys
-AcId-

 

[92TealSupra]

12 point 12mm socket from what I remember. Stock head studs use a 10mm Allen key.

 

[AcIdBuRn02ZTS]

Simple enough.. Thanks!

-AcId-

 

[hvyman]

i know arp head studs are a 13mm 12pt and yes stock head bolts are a 10mm which are easier to get at with a long 10mm.