Getting near 500 miles on my new motor.Want to retorque head bolts.Should they be done with engine cold,warm,or hot?Got hold of one of those special "obstruction " wrenchs made specifically for the Y-block.Goes around the exhaust manifolds so head bolts can be torqued without removing manifolds.Interested to see if it  actually works when used  for that purpose.

  

Engine cold.

Lorena, Texas (South of Waco)

Thank you Ted!