Connecting rod bolts
i have tried doing some internet searching and cant really find out the answer to my question.
1) in what years were the con-rod bolts upgraded to stronger ones?
2) i have a 2000 Z28 making about 422 rwhp.
what is a safe RPM to be able to spin my motor too? the guys at the tuning shop/garage said 6500 rpm is still safe.
motor has 42000 KMS on it .
Thanks !


