Thanks guys for the info. As to how do I know its blown, is you can hear it. An you can see a little
oil coming out between the head an the block. Its been leaking
oil there for about 3 months, I should have retorqued the heads then but didnt, dont think you can retorque them with the motor in the car. Thought about undoing the motor mounts an shifting the motor to the drivers side, an then pulling the head. Has anybody tried that.