What size is my nut?

[twenty mike mike]

I need to turn my 440 over by hand to check the cam rise. The biggest socket I have is 1 1/8", which aaalllllmost fits the crank pulley nut. 1 1/4", maybe? My adjustable wrench only goes to 1", so I can't check it that way. I'd hate to buy a 1 1/4 deep dish, just to find out it's really 1 3/16". 

It's a standard pulley...no fancy ARP fasteners or serpentine set up. It's a '68 dated engine, if that makes a difference. Thanks.

[Mick70RR]

It's 1 1/4".

[twenty mike mike]

Thank you.