You should redo the bolt torque after first full warm up of the motor plus 20 minutes or so. Then do it again within the next 500 miles or so. PITA but is necessary. If you run it hard , do it at 100 miles or so. You need to counter expansion and contraction of aluminum components which are more severe than with cast iron...Also, many torque wrenches are not accurate. If you have a buddy or two, it would be good to see if your wrenches read the same. I have a click type wrench that is off by about 12% low..Had it calibrated at work by a calibration shop.