Hey fellas I have been researching this in the forums and am confused about whether my final torque value on headbolts is 53 or 63 ft lbs. I have a z6 block with a y8 head with y8 headgasket, also would the values change since I also have a z6 headgasket with z6 head on a a6 block. Please unconfuse me I have no Helms and my progress is being held up by this the chilton's(i really don't trust) says 49 ft lbs help me out fellas...thanks in advance