Well i am getting ready to order some heads and i am kinda confused on what gasket to run. I am shooting for around 11:1 compression but i dont want my piston to valve clearance to be a issue. I have been told that running the .40 Cometic gasket will get me what i want but then i was told that PVC would be real close with that gasket. So can anyone help me out here that maybe has run this setup, or that knows a little more. I am set on the PRC 5.3L 2.5 heads and i have the F13 cam on a 113lsa. Any help would be appreciated. Thanks

 

With the larger valves, which are most likely hung lower than stock, you will probably have to flycut. I would measure first and you might get lucky, but my money is on cutting.