I am changing out my cam - lifters.At the same time over the winter I plan to change out all the main and rod bolts with ARP bolts. I made not get around to completing this till spring cause I am doing other things to the car also. Its winter projects and you all know how that goes. Is it safe to leave the motor open all winter with the pan off and top end removed. I do have it wrapped in a H/D moving blanket and its in a enclosed garage. I am also changing over to the lock-out system and doing the converion on the Idler arm.