With sorck heads and intake I use the felpro stock replacement steel intake. I install this with just a touch of "The Right Stuff" around the water jackets. At each end I use "The Right Stuff" and place a large bead on both ends. Let it cure for about 20 minutes to just get a skin and then drop on the intake. I install the bolts and let sit for 24 hours. Torque all bolts to spec using the corre ct sequence and no leaks. Remmember to get a little in under the heads at the block. "The Right Stuff" is canned presuized silicone. That is the name of it.
