performer rpm heads with ARP studs. conflicting torque values.

If the bore has been finished without a torque plate, I'm using the lower torque figure. If the bore has been finished with a torque plate, I'm using the same head gasket, thread depth, style of fastener and torque reading that was used when honed. That is, if the torque plate was held down with bolts I use bolts at the same thread depth when the head goes on. I don't hone with a composite gasket and then switch to a MLS gasket to run the engine. If I'm going to use studs in the engine I don't fasten the torque plate with bolts, even if I have to buy special studs just to hone with.

And then..........sometimes you just do what you can do..............



^^^ this. If you have no idea, and you're using studs, use the lower figure. With ARP lube they will still be clamping harder (and distorting the bore more) than any bolt. This choice should have been made when the plan was being thought up - well before any machining was done.