Re: Leaking bolt
all head and intake bolts must be coated in RTV. they all either go into water or oil. all holes should be cleaned up with a tap and then sprayed with carb cleaner and let dry before assembly, never had one leak while doing this.
for those with vortec's. be careful using a longer bolt in the middle of the intake. many times these holes are only so deep and you may break it off or damage the threads if you try this.