overtorque rocker arms

I was using a torque wrench today that I was not familiar with today and torquing down my rocker arms. I realized afterwards that I had applied about 36 inch pounds too much torque. After I torque them, I heard something like a grinding sound, or kind of like sandpaper grit rubbing on something. It was like that for about 10 minutes until I unscrewed them to release the pressure. I don't know how tough the pushrods and lifters are to withstand something like this. I just want to make sure the "grinding" noise wasn't the pushrods cracking themselves or digging into the lifters and messing them up. It's probably OK, because I figure these types of parts are pretty tough to put up with the stresses they do. Any thoughts?

Can you give some particulars on the vehicle we are talking about?

It's a 99 Malibu with 3.1 V6.

Can you give some particulars on the vehicle we are talking about?

It's a 99 Malibu with 3.1 V6.

You may want to post this in the Malibu forum..