[nightdriver09]

I don't see any real need to do that , although he
didn't say he had a 2.8 I can assume he has, as that has been an issue since 1985. It seems that
GM thought it was a good idea to use studs at the
water jacket locations and bolts in the middle, it
didn't figure on the nuts and bolts acting differently
under heat. It seems the nuts hold torque and the
bolts don't. therfore on one side of the water passages you might have 20 ftlbs and on the other
side maybe 2 ftlbs. Original intake manifold torque
is 13-25 ftlbs for 1984 up. the back two passages
are blank in the manifold but since water is still
present on the head side that makes 4 locations on
the two intake manifold gaskets where a leak can
occur. My best suggestion is to check the torque
on all 10 intake manifold studs and bolts. Running
the engine any more than necessary at this time
can only cause further damage to all bearing sur-
faces, (not the cast iron and steel surfaces, they
can handle the water-oil mixture). I went through
this ten years ago, so I know what i'm talking about
When I talked to some people in the business, do
you know what they said? "welcome to the club".