How many times can you torque a con rod bolt before its done? I heard 3 but maybe that's for lo-po stock bolts....and they already have 2 cycles on them when you get the motor.? Interesting topic. I'd just hit those ARP heads with a grinder and be done with them. Interesting casting irregularities on that same casting. Core numbers strike again? The C is the year, maybe 63? 59-60 was A IIRC for the slant. that "3 core plug" number is a 60-67 run.
