Originally Posted by fast68plymouth
Two of the aluminum blocks I used that came with the no name studs ended up needing them replaced.


The ARP’s higher tq spec required the blocks to be line honed to get the mains round again. Might be more of an issue with the aluminum block, but after replacing the studs, on one block the crank was quite hard to turn, and the other one tuned okay, but didn’t feel “right”........ so they got line honed(just more time and $$$).


The ARP kit comes with torque recommendation of 110 ft-lbs, block instruction says 100 ft-lbs.
When checked with ARP Tech service they recommended to stay with 100 ft-lbs since the block was already prepared for this torque.
110 ft-lbs was the normal torque on studs with the advertised strength.