Engine Breakin Question
I am getting ready to breakin a pontiac 400 engine in a 71 firebird with an auto trans. I was told that to minimize the load on the engine I should not connect the torque converter to the flexplate for the first start up and 20+ minute breakin process. Is this reasonable and is it a safety issue with the flexplate turning 2500 rpm so close to the stationary torque converter. Thanks for any comments.