Originally Posted by
More Power
Incidentally... I learned during the two Duramax head gasket projects here at TDP in 2021 that the final torque for the ARP head studs was identical to that produced by the factory TTY head bolt torque-angle setting. I used a torque wrench to install the TTY head bolts so I could measure final bolt torque during the final torque angle sweep. I was curious... This final torque value for either the ARP studs or the factory TTY head bolts for the Duramax wound up being 125 ft/lbs - identical between the ARP studs and what the torque angle setting wound up producing for the GM factory TTY head bolts. So... there is no more/less clamping load whether using TTY bolts or ARP studs. I found that very interesting...