HELP! Spec for flex plate bolts

[jingo]

Somewhere between the machinist's dyno and the mechanic's shop, my 390 (C6) flex plate bolts have gone missing. Which is a real problem because I also took the rims away to media blast and powder coat. So I'm tying up my poor mechanic's lift lift until I can find some bolts.

Can anyone here help me? Size, length, grade...case-hardened?

Thanks in advance, hoping I can make this right tomorrow.

Jack

[Ranchero50]

Fine thread grade 8, 7/16 - 20 x 1" long or so. I'd order a new set of ARP's from Summit and call it done. 7/16-20 is an oddball size.

[jingo]

Thank you Ranchero,