Just wondering how many retorque the headbolts after it is in the car for awhile?

 

i've checked them a few times, but only had to retorque them once. after about 2 weeks of driving i checked them and they had loosened a little. since then (about 8000 miles) they've been fine.

 

Scherejs-
Nice numbers on the dyno,you should hit the high 11's low 12's.

 

Did you cycle torque them when you installed them? After going through that back breaking tightening/loosening stuff 5X and ending up at a final torque of 83 ft lbs, I'd be surprised if mine loosened over time.