I went with a zero deck and use FelPro 1003 gaskets. They torque up at .040-.039. Good for bores up to 4.060. I am using Vortec heads and pistons with a slight "D" cup. Compression is about 9.2 or 9.3. Runs all day on 89 octaine.

No matter how you set your quench, getting it right it is well worth the effort.