use what ARP specifies, there Mil Spec, so it's bound to be diffrent than even the older stuff, but there website has the specs. if you bought TTY ARP ( don't know if there made but maby ) than you would need the TAM, because the TTY bolts are pre streached to yeild, so the 55* you have, would put that bolt right at yield, any more and you would snap it off. the old SBC torque specs could work otherwise.