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Discussion Starter · #1 ·
My 351W seems to have water in the lower head bolt holes. Is it the five lower holes that require sealant? Thanks very much for your help.:thumbup
 

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i wasn't aware they needed sealant.
if you're pulling the heads, might as well
put some new head gaskets on her and torque
them down in 3 steps.
 

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House of Windsor 4ever!
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You should check to see if the holes have bottoms (Chev bolts go into the water jacket); if they do, you don't need sealant, but you do have a problem with head gasket sealing, which may be caused by schmutz on either gasket surface, incorrect or uneven torquing, or non-flat to warped heads and/or
block deck surfaces. Consult with a trusted machine shop, who for a fee can check all of those possible symptoms. Getting back to the head bolts, make sure their length and diameter is within specs, that they're not corrosion damaged, and that they're wire brushed clean before reinstallation. Dip them in non-synthetic engine oil, and torque strictly to the steps and pattern set
by the factory. By doing this, I've only experienced only one failure, caused
by a crack down in the bolt hole (on a 289). Good luck!
 

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Discussion Starter · #4 ·
the 302 lower bolts go into water jackets, isn't the 351 the same?

I thought they were about the same that way.
 
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