Best valve cover gaskets?

Another point to be made is re torque the bolts after you have ran the engine. Let it go thorough a couple of heat cycles then re torque. I have torqued the bolts to specs and had to re torque them later. I was amazed of how loose the were when I re torqued them. I ran the Mopar Performace valve covers if that makes any difference.

I installed the Fel-Pro using a hylomar sealant. I cleaned the head surface with a roloc disc and then brake cleaner. I cleaned all oil from the valve cover. I torqued to the proper 40 inch lbs. After a long drive, the last half of which my motor smoked like a smokestack, I found them leaking like a sieve. I checked the torque and they were extremely loose. I retourqued them but had enough for one day. I will drive again tomorrow and recheck torque.