i am replacing the head gaskets in my 02 deville. i need to know the best way to hold my cams in place when removing the head. i know they are under pressure, so just any advice on the best way to do it would be appreciated

 

They should not move that much for it to be a big deal. Make sure pistons are down in the hole 3/8" of an inch before you put head on should be enough to keep valves from hitting piston. The timing chain installation is somewhat unique. You definitely want service information to reassemble.